The Resonant Theory: A Hydrodynamic Framework for the Quantum Plenum

Author: Justin Time Miller
Version: 4.0
Date: October 2026

Abstract

Contemporary theoretical physics relies on non-baryonic dark-sector parameterizations—dark matter and dark energy—to reconcile macroscopic cosmological observations with the Standard Model. This paper formulates a physical framework that replaces the empty inviscid vacuum with a continuous, compressible, two-fluid hydrodynamic substrate termed the Quantum Plenum, modeled on the Tisza–Landau two-fluid formalism of superfluid $^{3}\text{He}$ and $^{4}\text{He}$ [1, 2, 5]. From the electromagnetic fine-structure constant $\alpha$ and natural logarithmic attenuation $e$, we define two strictly dimensionless hydrodynamic coupling invariants: the Universal Acoustic Susceptibility $A_{\text{RT}} = \alpha^{-1}/e = 50.412727$ and its reciprocal damping ratio, the Acoustic Venting Coefficient $\beta_{\text{TRT}} = e / A_{\text{RT}} = 0.05392055$, which defines the equilibrium normal-fluid mass fraction $\chi_n \equiv \rho_{n,0}/\rho_0 = \beta_{\text{TRT}}$. Conditioning on explicitly declared constitutive postulates and discrete topological/harmonic indices (Table 1) and anchoring to the local present-epoch acoustic wave speed $c_0 = 2.99792458 \times 10^8\text{ m s}^{-1}$ and carrier frequency $f_0 = 7.64496 \times 10^7\text{ Hz}$ ($L_0 = c_0 / f_0 = 3.92144\text{ m}$), we establish a dimensionally homogeneous system of characteristic Plenum scales (Table 2) for kinematic viscosity ($\nu_0 = c_0 L_0 / A_{\text{RT}} = 2.3320 \times 10^7\text{ m}^2\text{s}^{-1}$), relaxation time ($\tau_0 = f_0^{-1} = 1.30805 \times 10^{-8}\text{ s}$), and minimum cavitation energy ($E_{\text{cav}} = A_{\text{RT}} h f_0 = 2.5537 \times 10^{-24}\text{ J}$). Within this constitutive framework: (1) under a declared 5-torus soliton rest-energy functional on $\mathbb{T}^5$ with $(p,q)=(2,3)$ Trefoil knot multiplicity $N_{\text{cells}} = pq = 6$ and normal-fluid Stokes boundary-layer energy fraction $\frac{2}{\pi}\beta_{\text{TRT}}$, the constitutive proton-to-electron rest-energy ratio $\mu_{\text{TRT}} = 6\pi^5 + \frac{2}{\pi}\beta_{\text{TRT}} = 1836.152436$ approximates the CODATA 2022 value $1836.15267343(11)$ to $0.13\text{ ppm}$ ($|\Delta\mu| = 2.37 \times 10^{-4}$); (2) a dimensionally homogeneous Bernoulli cavitation threshold $m(E_k) = \mu_0\,\Theta(E_k / E_{\text{cav}} - 1)$ defines a classical hydrodynamic mass floor $\mu_0 = E_{\text{cav}} / c_0^2 = 2.8414 \times 10^{-41}\text{ kg}$; (3) introducing the solenoidal Leray–Helmholtz projected cubic venting term $-\beta_{\text{TRT}}\tau_0 \mathbb{P}(|\boldsymbol{\omega}|^2\boldsymbol{\omega})$ into the 3D vorticity equation preserves $\nabla \cdot \boldsymbol{\omega} = 0$ identically and admits a complete a priori global $L^2$ enstrophy bound for smooth solutions on $\mathbb{R}^3$ and $\mathbb{T}^3$ (Theorem 1); (4) solving the 1D line-of-sight quarter-wave Helmholtz resonator $\delta P''(r) + k^2\delta P(r) = 0$ with Neumann antinode $\delta P'(0)=0$ and Dirichlet horizon node $\delta P(R_H)=0$ yields $\delta P(r) = \delta P_0\cos(kr)$ with exact fundamental eigenvalue $k_1 R_H = \pi/2$, predicting a $+8.47\%$ apparent local Hubble shift ($H_{\text{late, TRT}} = H_{\text{early}}(1 + \frac{\pi}{2}\beta_{\text{TRT}}) = 73.11\text{ km s}^{-1}\text{Mpc}^{-1}$ from $H_{\text{early}} = 67.40\text{ km s}^{-1}\text{Mpc}^{-1}$) and geometric-mean BAO scale $\lambda_{\text{BAO}} = 152.53\text{ Mpc}$; (5) a linearized Poisson hydrostatic pressure-depletion law $\nabla^2 P = 4\pi G\rho_0\rho_M$ reproduces Newton's inverse-square law $\mathbf{g} = -\frac{1}{\rho_0}\nabla P = -\frac{GM}{r^2}\hat{\mathbf{r}}$ with exact outward pressure gradient $\frac{dP}{dr} = +\frac{\rho_0 GM}{r^2} > 0$; and (6) a Master Classification Ledger (Table 4) separates retrodictive benchmarks (including lunar recession $\dot{r}_{\text{net}} = 3.816\text{ cm yr}^{-1}$) from a prospective out-of-sample 2028–2030 Europa Clipper Doppler falsification test ($\bar{a}_{\text{plenum}} = (8.47 \pm 0.34) \times 10^{-10}\text{ m s}^{-2}$ across the radial transition band $[8.124, 8.812] \times 10^{-10}\text{ m s}^{-2}$).

1. Introduction & Literature Positioning

1.1 Physical Picture: Space as an Acoustic Two-Fluid Medium

To grasp the core physical intuition of The Resonant Theory (TRT) before entering its formal differential equations, consider the difference between an empty geometric stage and a submerged acoustic chamber. In standard cosmology and quantum theory, empty space is treated as a frictionless void; when galaxies rotate faster than visible matter allows, or when distant supernovae appear dimmer than early-universe expansion predicts, invisible "dark matter" particles and repulsive "dark energy" fields must be added to balance the equations. TRT investigates a mechanical alternative: what we call "empty space" is modeled as a continuous, compressible two-fluid medium—the Quantum Plenum—analogous to laboratory superfluid helium ($^{3}\text{He}$ and $^{4}\text{He}$). At equilibrium, $94.61\%$ of this medium acts as an inviscid superfluid condensate ($\rho_{s,0} / \rho_0 = 1 - \beta_{\text{TRT}}$) that transmits electromagnetic and gravitational waves without shear resistance, while the remaining $5.39\%$ ($\chi_n = \rho_{n,0}/\rho_0 = \beta_{\text{TRT}} = 0.05392055$) acts as a viscous "normal fluid" boundary component. Just as a vortex ring in liquid helium is a self-sustaining topological structure of the fluid itself, elementary particles in TRT are modeled as quantized toroidal vortex solitons in the Plenum, while macroscopic orbital and cosmological residuals emerge from the $5.39\%$ normal-fluid attenuation and standing-wave boundary geometry of the medium.

1.2 The Cosmological Crisis and Theoretical Lineage

The persistent tension between quantum field theory and general relativity has required auxiliary dark-sector parameterizations across cosmological scales. Late-time cosmic acceleration and the $5\sigma$ Hubble tension between early-universe Cosmic Microwave Background (CMB) inferences ($H_{\text{early}} = 67.40 \pm 0.50\text{ km s}^{-1}\text{Mpc}^{-1}$ [8]) and local Type Ia supernova distance-ladder measurements ($H_{\text{late}} = 73.04 \pm 1.04\text{ km s}^{-1}\text{Mpc}^{-1}$ [9]) are conventionally attributed to dark energy ($\Lambda$), while flat galactic rotation curves [7] and outer heliospheric angular-momentum residuals are attributed to cold dark matter halos.

Rather than introducing new particle species, The Resonant Theory (TRT) investigates whether these anomalies can be organized within a single constitutive hypothesis: that the physical vacuum acts as a compressible, two-fluid electro-hydrodynamic substrate. This inquiry synthesizes three established physics lineages while introducing an explicit normal-fluid dissipation closure:

1. Superfluid Vacuum & Analogue Gravity Theories: Following Tisza (1938) [1] and Landau (1941) [2], Volovik (2003) [5] showed that quasiparticles in superfluid $^{3}\text{He-A}$ reproduce emergent Lorentz invariance, gauge fields, and effective acoustic metrics [4]. However, standard superfluid-vacuum models treat the vacuum ground state as strictly inviscid ($\nu = 0$) below the Landau critical velocity, providing no quantitative mechanism for secular orbital drag or cosmological redshift attenuation.
2. Topological Soliton Models of Baryons: Following Kelvin's vortex-atom hypothesis and Skyrme's (1961) nonlinear meson theory [3], Faddeev and Niemi (1997) [6] demonstrated that knotted toroidal vortex solitons—specifically the $(2,3)$ Trefoil knot $3_1$—emerge as stable energy minima in three-dimensional field theories, though standard Skyrmion models require tunable coupling parameters to match empirical baryon-to-lepton mass ratios.
3. Methodological Transparency & Separation of Postulates from Predictions: TRT models the vacuum as a viscous-normal plus inviscid-superfluid two-component substrate governed by two dimensionless electro-hydrodynamic invariants, $A_{\text{RT}} = \alpha^{-1}/e = 50.412727$ and $\beta_{\text{TRT}} = e / A_{\text{RT}} = 0.05392055$. To maintain strict distinction between constitutive axioms, discrete topological/harmonic integers, retrodictive benchmarks, and prospective out-of-sample predictions, Section 2 declares all six foundational postulates (P1–P6) in Table 1, and Section 8 classifies every quantitative claim in Table 4.

2. Foundational Postulates, Two-Fluid Constitutive Equations & Closure Relations for $\beta_{\text{TRT}}$

Physical Picture: Why does a single dimensionless number, $\beta_{\text{TRT}} = 0.05392055$, appear across the boundary-layer skin of a subatomic proton, the damping of a spinning fluid vortex, and the attenuation of light across cosmological distances? Within the Tisza–Landau two-fluid framework, all three effects represent standard constitutive closures of the equilibrium normal-fluid mass fraction ($\chi_n = 5.392\%$). At the medium's characteristic relaxation resonance ($\omega\tau_0 = 1$), the $5.392\%$ normal-fluid fraction sets the per-radian wave attenuation rate; in a spinning vortex tube, centrifugal phase separation expels that same $5.392\%$ normal-fluid fraction into an annular boundary sheath of leading-order thickness $\delta^*/R \approx \frac{1}{2}\beta_{\text{TRT}} = 2.696\%$ (exact nonlinear root $1 - \sqrt{1-\beta_{\text{TRT}}} = 2.733\%$); and in high-vorticity cores, Hall–Vinen mutual friction proportional to $\chi_n$ vents excess spin into acoustic waves. Proposition 1 formalizes these three constitutive closure relations.

2.1 State Variables and Tisza–Landau Two-Fluid Decomposition

Postulate P1 (Two-Fluid Quantum Plenum): Physical space is occupied by a continuous, compressible two-fluid substrate described at every spacetime point $(\mathbf{x}, t)$ by the Tisza–Landau mass and momentum decomposition [1, 2]: \begin{equation} \rho(\mathbf{x}, t) = \rho_s(\mathbf{x}, t) + \rho_n(\mathbf{x}, t), \qquad \mathbf{j}(\mathbf{x}, t) = \rho_s \mathbf{u}_s + \rho_n \mathbf{u}_n \tag{1} \end{equation} where:

• $\rho_s$ $[\text{kg m}^{-3}]$ and $\mathbf{u}_s$ $[\text{m s}^{-1}]$ denote the density and velocity field of the superfluid condensate component, which is irrotational outside quantized vortex cores ($\nabla \times \mathbf{u}_s = 0$) and has zero intrinsic shear viscosity ($\eta_s = 0$);
• $\rho_n$ $[\text{kg m}^{-3}]$ and $\mathbf{u}_n$ $[\text{m s}^{-1}]$ denote the density and velocity field of the normal viscous component, which carries thermal/acoustic excitations and dynamic shear viscosity $\eta_n = \rho_n \nu_0$.

At the present cosmological epoch ($t = t_0$, redshift $z = 0$), the undisturbed background Plenum has uniform total density $\rho_0 = \rho_{s,0} + \rho_{n,0}$, equilibrium normal-fluid mass fraction $\chi_n \equiv \rho_{n,0} / \rho_0 = \beta_{\text{TRT}} = 0.05392055$, and barotropic equation of state $P(\rho) = c_0^2 \rho$. Linearizing the mass continuity equation $\partial_t \rho + \nabla \cdot (\rho \mathbf{u}) = 0$ and Euler momentum equation $\rho \partial_t \mathbf{u} = -\nabla P$ around $\rho_0$ yields the wave equation $\partial_t^2 \delta\rho - c_0^2 \nabla^2 \delta\rho = 0$, where the present-epoch local longitudinal acoustic wave speed is the invariant vacuum speed of light: \begin{equation} c_0 = \sqrt{\left.\frac{\partial P}{\partial \rho}\right|_{\rho_0}} = 2.99792458 \times 10^8\text{ m s}^{-1} \quad [\text{L T}^{-1}] \tag{2} \end{equation}

Operational Distinction Between Present-Epoch Local $c_0$ and Cosmological Lookback Attenuation: Throughout this framework, $c_0$ is a fixed, invariant local constant at the present epoch ($z = 0$) used in all atomic, laboratory, and solar-system equations (preserving the constancy of $\alpha$ in Section 3.1). Over cosmological lookback paths ($z > 0$), normal-fluid Stokes–Kirchhoff damping along the line of sight attenuates propagating photon frequency $\omega(r)$ without altering local present-day $c_0$, as formulated in Section 5.1.

2.2 Proposition 1: Constitutive Closure Relations Unifying the Operational Roles of $\beta_{\text{TRT}}$

In TRT, the dimensionless constant $\beta_{\text{TRT}} = 0.05392055$ is defined fundamentally as a single physical state ratio: the equilibrium normal-fluid mass fraction of the Plenum, \begin{equation} \chi_n \equiv \frac{\rho_{n,0}}{\rho_0} \equiv \beta_{\text{TRT}} = 0.05392055 \quad [\text{dimensionless: } 1] \tag{3} \end{equation} Proposition 1 (Two-Fluid Constitutive Closures): Under the standard two-fluid closure hypotheses of (i) unit relaxation quality factor $Q_n(\omega\tau_0 = 1) = 1$ at the carrier relaxation resonance, (ii) centrifugal phase expulsion of the normal fluid into a peripheral annular vortex sheath, and (iii) Hall–Vinen cubic mutual friction at high strain rates $\tau_0|\boldsymbol{\omega}| \gtrsim 1$, the equilibrium normal-fluid fraction $\chi_n = \beta_{\text{TRT}}$ in Eq. (3) determines three secondary transport coefficients:

1. Per-Radian Acoustic Energy & Single-Quantum Frequency Attenuation Rate ($\Gamma_{\text{rad}} = \beta_{\text{TRT}}$): Consider a longitudinal wave mode $\mathbf{u}(\phi) = \mathbf{u}_0 e^{i\phi}$ ($\phi = k r - \omega t$) coupled to the Plenum's relaxation resonance $\omega\tau_0 = 1$. In the two-fluid mixture (1), the superfluid fraction $\rho_{s,0}/\rho_0 = 1 - \chi_n$ oscillates without viscous loss, whereas the normal-fluid fraction $\chi_n = \rho_{n,0}/\rho_0$ undergoes Debye/Stokes–Kirchhoff relaxation damping with unit loss tangent $Q_n^{-1}(\omega\tau_0=1) = 1$. Thus the fraction of classical wave energy $E = \frac{1}{2}\rho_0 |\mathbf{u}|^2$ dissipated per radian of phase advance ($d\phi = 1\text{ rad}$) is: $\frac{1}{E}\frac{dE}{d\phi} = -\frac{\rho_{n,0}}{\rho_0} Q_n^{-1}\big|_{\omega\tau_0=1} = -\chi_n = -\beta_{\text{TRT}}$ For a single coherent electromagnetic/acoustic wave packet (photon/phonon) of energy $E_\gamma = \hbar\omega$ propagating along a forward number-conserving ray ($N_\gamma = E / (\hbar\omega) = 1$, $\hbar = \text{const}$), adiabatic action transfer to the normal-fluid background satisfies $\frac{dE_\gamma}{E_\gamma} = \frac{d(\hbar\omega)}{\hbar\omega} = \frac{d\omega}{\omega}$, yielding the exact per-radian frequency attenuation law used in Section 5.1: $\frac{1}{\omega}\frac{d\omega}{d\phi} = \frac{1}{E_\gamma}\frac{dE_\gamma}{d\phi} = -\beta_{\text{TRT}} \quad \left[\text{rad}^{-1}\right]$
2. Annular Vortex Boundary-Layer Thickness Ratio ($\delta^*/R$ — Exact vs. Leading-Order Linearization): In a cylindrical or toroidal vortex tube of outer cross-sectional radius $R$, centrifugal pressure expels the normal-fluid fraction $\chi_n = \beta_{\text{TRT}}$ into a peripheral annular shear sheath of radial thickness $\delta^*$ surrounding the inviscid superfluid core of radius $R - \delta^*$. Equating the annular cross-sectional area fraction $A_{\text{sheath}}/A_{\text{total}}$ to $\chi_n = \beta_{\text{TRT}}$ yields the quadratic equation: $\frac{A_{\text{sheath}}}{A_{\text{total}}} = \frac{\pi R^2 - \pi (R - \delta^*)^2}{\pi R^2} = 2\left(\frac{\delta^*}{R}\right) - \left(\frac{\delta^*}{R}\right)^2 = \chi_n = \beta_{\text{TRT}}$ Solving this quadratic exactly and comparing with its leading-order thin-sheath linearization ($\delta^*/R \ll 1$) gives: $\left(\frac{\delta^*}{R}\right)_{\text{exact}} = 1 - \sqrt{1 - \beta_{\text{TRT}}} = 0.0273339, \qquad \left(\frac{\delta^*}{R}\right)_{\text{lin}} = \frac{1}{2}\beta_{\text{TRT}} = 0.0269603$ The quadratic truncation residual is $\left(\frac{\delta^*}{R}\right)_{\text{exact}} - \frac{1}{2}\beta_{\text{TRT}} = 3.74 \times 10^{-4}$ ($\mathcal{O}(\beta_{\text{TRT}}^2)$), confirming that the linear thin-sheath closure $\delta^*/R \approx \frac{1}{2}\beta_{\text{TRT}}$ is accurate to $1.37\%$ relative ($0.037\%$ absolute).
3. Cubic Vorticity Mutual-Friction Coefficient ($\beta_{\text{TRT}}\tau_0$): Under the Hall–Vinen mutual-friction closure for a two-fluid vortex core of vorticity $\boldsymbol{\omega}$ $[\text{s}^{-1}]$, coupling between the normal-fluid fraction $\chi_n = \beta_{\text{TRT}}$ and quantized vortex lines transfers rotational energy into longitudinal Kelvin/acoustic modes at a nonlinear rate proportional to $\chi_n \tau_0^{-1} (\tau_0|\boldsymbol{\omega}|)^2 \boldsymbol{\omega} = \beta_{\text{TRT}}\tau_0 |\boldsymbol{\omega}|^2\boldsymbol{\omega}$ $[\text{s}^{-2}]$. Applying the solenoidal Leray–Helmholtz projector $\mathbb{P}$ yields the curl-compatible damping term $-\beta_{\text{TRT}}\tau_0 \mathbb{P}(|\boldsymbol{\omega}|^2\boldsymbol{\omega})$ analyzed in Section 6.1. $\blacksquare$

2.3 Summary of Declared Constitutive Postulates & Discrete Structural Indices

To ensure complete methodological transparency and avoid conflating continuous parameter fitting with discrete topological/harmonic indexing, Table 1 lists all six foundational postulates and discrete structural indices used in this framework.

Table 1: Declared Constitutive Postulates and Discrete Structural Indices of the TRT Framework

3. Dimensionless Coupling Constants & Characteristic Plenum Scales

Physical Picture: In engineering and fluid mechanics, dimensionless numbers (like the Reynolds or Mach number) describe how a fluid behaves regardless of scale, whereas dimensional scales (meters, seconds, kilograms) set the physical size of the system. In TRT, the fine-structure constant $\alpha^{-1} \approx 137.036$ measures how many electromagnetic wave cycles the Plenum sustains per natural logarithmic attenuation factor $e \approx 2.718$, giving the dimensionless Acoustic Susceptibility $A_{\text{RT}} = \alpha^{-1}/e = 50.412727$. Once we anchor a single macroscopic carrier frequency $f_0 = 76.4496\text{ MHz}$ (corresponding to a fundamental standing wavelength of $L_0 = 3.92144\text{ meters}$), every dimensional transport property of the vacuum—its relaxation time $\tau_0$, its kinematic viscosity $\nu_0$, and the minimum energy $E_{\text{cav}}$ required to nucleate a cavitated vortex core—is fixed with exact SI units.

We maintain a strict separation between dimensionless coupling ratios (Section 3.1) and dimensional physical scales carrying SI units of length $[\text{L}]$, time $[\text{T}]$, mass $[\text{M}]$, and kinematic viscosity $[\text{L}^2\text{T}^{-1}]$ (Section 3.2).

3.1 The Two Strictly Dimensionless Coupling Invariants ($A_{\text{RT}}$ and $\beta_{\text{TRT}}$)

Using the CODATA 2022 inverse fine-structure constant $\alpha^{-1} = 4\pi \varepsilon_0 \hbar c_0 / e_c^2 = 137.035999177$ and Euler's number $e = 2.71828182846$, Postulate P2 defines the Universal Acoustic Susceptibility ($A_{\text{RT}}$) as the dimensionless ratio of electromagnetic coupling capacity to single-neper logarithmic attenuation: \begin{equation} A_{\text{RT}} \equiv \frac{\alpha^{-1}}{e} = \frac{137.035999177}{2.71828182846} = 50.412727 \quad [\text{dimensionless: } 1] \tag{4} \end{equation} Its reciprocal damped ratio defines the Acoustic Venting Coefficient ($\beta_{\text{TRT}}$): \begin{equation} \beta_{\text{TRT}} \equiv \frac{e}{A_{\text{RT}}} = \frac{e^2}{\alpha^{-1}} = 0.05392055 \quad [\text{dimensionless: } 1] \tag{5} \end{equation} Both $A_{\text{RT}}$ and $\beta_{\text{TRT}}$ are strictly dimensionless pure numbers everywhere in this work (never carrying degree, radian, or dimensional units).

3.2 Characteristic Dimensional Scales of the Plenum

To map $A_{\text{RT}}$ and $\beta_{\text{TRT}}$ into SI dimensional units, Postulate P4 declares the macroscopic Plenum carrier frequency anchor at $f_0 = 7.64496 \times 10^7\text{ Hz}$ ($76.4496\text{ MHz}$). Heuristic binary-octave scaling down from the Planck angular frequency $\omega_P = \sqrt{c_0^5 / (\hbar G)} = 1.85486 \times 10^{43}\text{ s}^{-1}$ across $N_0 = 117.5$ octaves plus the hexagonal close-packed ($\theta_{\text{HCP}} = \pi/6 = 30^\circ$) normal-fluid mass-loading shift $\Delta N_{\text{visc}} = \beta_{\text{TRT}} \cos(\pi/6) = 0.046697\text{ octaves}$ gives: \begin{equation} f_{\text{oct}} = \frac{\omega_P / (1\text{ rad})}{2^{117.5 + \beta_{\text{TRT}}\cos(\pi/6)}} = 7.64239 \times 10^7\text{ Hz}, \qquad f_0 = 7.64496 \times 10^7\text{ Hz} \quad [\text{T}^{-1}] \tag{6} \end{equation} Because $\omega_P \propto G^{-1/2}$, the $2.2 \times 10^{-5}$ experimental uncertainty in $G$ propagates to $\delta\omega_P / \omega_P = \frac{1}{2}(\delta G / G) = 1.1 \times 10^{-5}$, whereas the $3.36 \times 10^{-4}$ ($0.034\%$) offset between $f_{\text{oct}}$ and $f_0$ corresponds to second-order normal-fluid dispersion ($\frac{1}{8}\beta_{\text{TRT}}^2 = 3.63 \times 10^{-4}$); accordingly, $f_0 = 7.64496 \times 10^7\text{ Hz}$ is treated explicitly as a declared empirical dimensional anchor (Postulate P4). From $f_0 = 7.64496 \times 10^7\text{ Hz}$, $c_0 = 2.99792458 \times 10^8\text{ m s}^{-1}$, and Planck's constant $h = 6.62607015 \times 10^{-34}\text{ J s}$, the characteristic dimensional scales of the Quantum Plenum follow directly from two-fluid kinetic transport theory:

1. Fundamental Carrier Wavelength ($L_0$): The wavelength of a longitudinal carrier wave propagating at speed $c_0$ with frequency $f_0$ is: \begin{equation} L_0 \equiv \frac{c_0}{f_0} = \frac{2.99792458 \times 10^8\text{ m s}^{-1}}{7.64496 \times 10^7\text{ s}^{-1}} = 3.92144\text{ m} \quad [\text{L}] \tag{7} \end{equation}
2. Characteristic Acoustic Relaxation Time ($\tau_0$): The single-cycle relaxation period of the carrier wave is: \begin{equation} \tau_0 \equiv \frac{1}{f_0} = \frac{L_0}{c_0} = 1.30805 \times 10^{-8}\text{ s} \quad [\text{T}] \tag{8} \end{equation}
3. Plenum Kinematic Viscosity ($\nu_0$): By Chapman–Enskog and Landau–Khalatnikov kinetic transport theory, a compressible fluid with sound speed $c_0$ and fundamental wave-packet mean free path $L_0$ possesses bare acoustic diffusivity $D_0 = c_0 L_0$. Dividing $D_0$ by the dimensionless acoustic susceptibility quality factor $A_{\text{RT}}$ defines the equilibrium kinematic viscosity of the Plenum: \begin{equation} \nu_0 \equiv \frac{D_0}{A_{\text{RT}}} = \frac{c_0 , L_0}{A_{\text{RT}}} = \frac{(2.99792458 \times 10^8\text{ m s}^{-1})(3.92144\text{ m})}{50.412727} = 2.33199 \times 10^7\text{ m}^2\text{ s}^{-1} \quad [\text{L}^2\text{T}^{-1}] \tag{9} \end{equation}
4. Hydrodynamic Cavitation Energy Threshold ($E_{\text{cav}}$) and Mass Floor ($\mu_0$): A single carrier phonon carries quantum energy $E_1 = h f_0$. Nucleating a persistent cavitated vortex core against the Plenum's acoustic susceptibility barrier $A_{\text{RT}}$ requires the coherent superposition of $A_{\text{RT}}$ carrier quanta within a single wavelength volume, defining the minimum cavitation energy $E_{\text{cav}}$ and its Einstein–de Broglie mass floor $\mu_0 = E_{\text{cav}}/c_0^2$: \begin{equation} E_{\text{cav}} \equiv A_{\text{RT}} h f_0 = 2.55373 \times 10^{-24}\text{ J}, \qquad \mu_0 \equiv \frac{E_{\text{cav}}}{c_0^2} = \frac{A_{\text{RT}} h f_0}{c_0^2} = 2.84140 \times 10^{-41}\text{ kg} \tag{10} \end{equation}

Table 2: Characteristic Scale System of the Quantum Plenum (Exact Arithmetic Verification)

4. Topological Soliton Particles & Constitutive Rest-Energy Ratio Formula

Physical Picture: Why is a proton $1836.15267$ times heavier than an electron, and why do atomic nuclei destabilize when too many nucleons crowd into a shell? Picture an electron as a single, unknotted toroidal vortex ring ($0_1$) in the Plenum. A proton, by contrast, is modeled as the simplest self-locking 3D torus knot: the $(2,3)$ Trefoil knot ($3_1$), which winds twice through its poloidal core ($p=2$) and three times around its toroidal perimeter ($q=3$). Those $p \times q = 2 \times 3 = 6$ standing half-wave cells sweep across five cyclic degrees of freedom ($\Omega_{\text{cell}} = [0,\pi]^5 \subset \mathbb{T}^5$), giving a bare phase-space rest-energy ratio of $6\pi^5 = 1836.118109$. Because the knotted vortex core also couples to the $5.392\%$ normal-fluid boundary sheath across its meridian dipole profile ($\frac{2}{\pi}\beta_{\text{TRT}} = 0.034327$), its total rest-energy ratio rises to $1836.152436$—matching the experimental proton-to-electron mass ratio to $0.13$ parts per million. Furthermore, when nucleons pack together like spheres around a central core (as in Carbon-12, where 12 spheres surround 1), their normal-fluid boundary skins reduce the empty interstitial space from $25.95\%$ to $19.80\% \approx 20\%$. Twelve spheres fit around a central core with $>60^\circ$ ($>1\text{ radian}$) between centers, whereas forcing a $13\text{th}$ sphere onto the inner shell compresses neighbors closer than 1 radian ($57.2958^\circ$), causing adjacent acoustic wakes to interfere constructively and trigger nuclear fission.

4.1 Topological Duality & Declared Soliton Energy Functional on $\mathbb{T}^5$

Under Postulate P3 (Table 1), elementary fermions are modeled as phase-locked toroidal vortex solitons whose internal configuration space is the 5-dimensional flat torus $\mathbb{T}^5 = (S^1)^5$, parameterized by five orthogonal cyclic phase coordinates $\boldsymbol{\vartheta} = (\vartheta_1, \vartheta_2, \vartheta_3, \vartheta_4, \vartheta_5)$ representing: (1) toroidal azimuth $\vartheta_1$, (2) poloidal twist $\vartheta_2$, (3) radial core acoustic standing-wave phase $\vartheta_3$, (4) superfluid condensate phase $\vartheta_4$, and (5) normal-fluid shear phase $\vartheta_5$:

• The Electron (Unknotted Reference Soliton $0_1$, $(p_e, q_e) = (1, 1)$): Defines the unit point-core reference state ($\mathcal{V}_e \equiv 1$) with quantized superfluid circulation $\Gamma_e = h / m_e$, canonical reference rest energy $E_e = m_e c_0^2$, and uniform phase-space energy density $\mathcal{E}_0 \equiv E_e$ per unit $\mathbb{T}^5$ measure.
• The Proton (Knotted Trefoil Torus Soliton $3_1$, $(p, q) = (2, 3)$): Modeled as the minimal non-trivial torus knot—the $(p, q) = (2, 3)$ Trefoil knot ($3_1$) [3, 6], which winds $p = 2$ times poloidally and $q = 3$ times toroidally (forming 3 azimuthal scattering lobes).
• Explicit Derivation of Nodal Cell Multiplicity ($N_{\text{cells}} = p q = 6$): On the 2-torus carrier surface $[0, \pi]_{\text{pol}} \times [0, \pi]_{\text{tor}}$, a $(p, q)$ standing-wave soliton eigenmode $\psi_{p,q}(\vartheta_1, \vartheta_2) = \sin(p\vartheta_1)\sin(q\vartheta_2)$ vanishes along the nodal grid $\vartheta_1 = k\pi/p$ ($k=0,\dots,p$) and $\vartheta_2 = \ell\pi/q$ ($\ell=0,\dots,q$). This nodal grid partitions the fundamental domain into exactly $p \times q$ non-overlapping half-wave phase cells $\Omega_{k,\ell}$. For the $(p, q) = (2, 3)$ Trefoil soliton (which equivalently possesses minimal knot crossing number $C(3_1) = 3$ and $2 C(3_1) = 6$ bilateral superfluid/normal-fluid sheath crossings): \begin{equation} N_{\text{cells}}(2, 3) = p \cdot q = 2 , C(3_1) = 2 \times 3 = 6 \tag{11} \end{equation}

4.2 Commensurable Rest-Energy Ratios for the Proton-to-Electron Mass Ratio ($\mu_{\text{TRT}} = m_p / m_e$)

By Einstein–de Broglie relativistic hydrodynamics ($m = E_{\text{rest}} / c_0^2$), the dimensionless proton-to-electron mass ratio $\mu_{\text{TRT}} \equiv m_p / m_e$ is defined strictly as a sum of commensurable dimensionless rest-energy ratios ($[\text{J}/\text{J}] = 1$) relative to $E_e = m_e c_0^2$: \begin{equation} \mu_{\text{TRT}} \equiv \frac{m_p}{m_e} = \frac{E_{\text{rest}}(2, 3)}{E_e} = \frac{E_{\text{geom}}(2, 3)}{E_e} + \frac{E_{\text{visc}}(\beta_{\text{TRT}})}{E_e} = M_{\text{geom}}(2, 3) + \Delta M_{\text{visc}}(\beta_{\text{TRT}}) \tag{12} \end{equation}

1. Bare 5-Torus Phase-Space Rest-Energy Ratio ($M_{\text{geom}} = E_{\text{geom}}/E_e = 6\pi^5$): Under Postulate P3, each of the proton's $N_{\text{cells}} = p q = 6$ locked half-wave soliton cells occupies the half-period hypercube $\Omega_{\text{cell}} = [0, \pi]^5 \subset \mathbb{T}^5$ equipped with the canonical flat measure $d^5\vartheta = d\vartheta_1\,d\vartheta_2\,d\vartheta_3\,d\vartheta_4\,d\vartheta_5$ and uniform phase-locked energy density $\mathcal{E}_0 = E_e$. Integrating the bare soliton rest energy $E_{\text{geom}}(2, 3)$ over all $N_{\text{cells}} = 6$ cells and dividing by the reference rest energy $E_e$ yields the exact dimensionless energy ratio: \begin{equation} M_{\text{geom}}(2, 3) \equiv \frac{E_{\text{geom}}(2, 3)}{E_e} = \frac{1}{E_e} \sum_{j=1}^{N_{\text{cells}}} \int_{[0,\pi]^5} \mathcal{E}0 , d^5\vartheta = p , q \prod{k=1}^{5} \left(\int_0^\pi d\vartheta_k\right) = (2 \times 3) \cdot \pi^5 = 6\pi^5 = 1836.118109 \tag{13} \end{equation}
2. Normal-Fluid Meridian Boundary-Layer Rest-Energy Ratio ($\Delta M_{\text{visc}} = E_{\text{visc}}/E_e = \frac{2}{\pi}\beta_{\text{TRT}}$): In an inviscid fluid ($\chi_n = \beta_{\text{TRT}} = 0$), Eq. (13) gives $6\pi^5 = 1836.118109$, leaving a residual of $0.034564$ below experiment. To evaluate the normal-fluid boundary-layer rest energy $E_{\text{visc}}(\beta_{\text{TRT}})$ in units directly commensurable with $E_e$, consider the meridian polar angle $\theta \in [0, \pi]$ of the toroidal vortex core. Relative to the unattenuated core meridian energy density $e_0 \equiv E_e / \pi$ $[\text{J rad}^{-1}]$ (normalized such that $\int_0^\pi e_0\,d\theta = E_e$), the peripheral normal-fluid mass fraction $\chi_n = \rho_{n,0}/\rho_0 = \beta_{\text{TRT}}$ couples under Postulate P3 to the fundamental poloidal half-wave dipole projection $\sin\theta$ across $\theta \in [0, \pi]$, storing differential boundary-layer rest energy $dE_{\text{visc}}(\theta) = \chi_n e_0 \sin\theta\,d\theta$. Integrating $dE_{\text{visc}}(\theta)$ over $\theta \in [0, \pi]$ and dividing by the reference rest energy $E_e = \int_0^\pi e_0\,d\theta$ yields the exact dimensionless rest-energy increment: \begin{equation} \Delta M_{\text{visc}}(\beta_{\text{TRT}}) \equiv \frac{E_{\text{visc}}(\beta_{\text{TRT}})}{E_e} = \frac{\int_0^\pi \chi_n e_0 \sin\theta,d\theta}{\int_0^\pi e_0 , d\theta} = \frac{\beta_{\text{TRT}}}{\pi}\int_0^\pi \sin\theta,d\theta = \frac{2}{\pi}\beta_{\text{TRT}} = \frac{2}{\pi}(0.05392055) = 0.0343269 \tag{14} \end{equation}

Summing the two dimensionless rest-energy ratios (13) and (14) yields the constitutive TRT mass-ratio formula: \begin{equation} \mu_{\text{TRT}} = \frac{E_{\text{geom}} + E_{\text{visc}}}{E_e} = 6\pi^5 + \frac{2}{\pi}\beta_{\text{TRT}} = 1836.118109 + 0.034327 = 1836.152436 \tag{15} \end{equation} Precision Calibration vs. CODATA 2022: Comparing $\mu_{\text{TRT}} = 1836.152436$ to the CODATA 2022 experimental value $\mu_{\text{exp}} = 1836.15267343(11)$ gives an absolute residual of $|\mu_{\text{TRT}} - \mu_{\text{exp}}| = 2.37 \times 10^{-4}$, or a relative approximation accuracy of $0.13\text{ ppm}$ ($99.999987\%$). Because this $0.13\text{ ppm}$ residual exceeds the $6 \times 10^{-11}$ CODATA experimental uncertainty, Eq. (15) is classified in Table 4 as a leading-order constitutive soliton benchmark (prior to $\mathcal{O}(\beta_{\text{TRT}}^3)$ toroidal aspect-ratio curvature corrections) rather than an exact identity.

4.3 Secondary Bjerknes Nuclear Binding, Void Fraction ($\epsilon_{\text{eff}}$) & The 1-Radian ($57.2958^\circ$) Limit

In a compressible fluid of density $\rho_0$, two spherical solitons pulsating in phase at angular frequency $\omega_0$ with volume amplitudes $\dot{V}_1, \dot{V}_2$ experience an attractive secondary Bjerknes acoustic radiation force: \begin{equation} \mathbf{F}_{\text{Bj}}(r) = -\frac{\rho_0 \langle \dot{V}_1 \dot{V}2 \rangle}{4\pi r^2} \exp!\left(-\frac{r}{\lambda{\text{screen}}}\right)\hat{\mathbf{r}} \tag{16} \end{equation} At contact, 12 equal spheres packed around a central sphere of radius $R$ form the Carbon-12 12-around-1 close-packed cluster:

1. Effective Interstitial Void Fraction ($\epsilon_{\text{eff}}$ — Both Linearized and Exact Sheath Roots): By Kepler–Hales close-packing, bare rigid spheres of radius $R$ have maximum FCC/HCP packing density $\phi_{\text{FCC}} = \frac{\pi}{3\sqrt{2}} = 0.740480$ (bare void fraction $1 - \phi_{\text{FCC}} = 0.259520$). Including the normal-fluid boundary-layer sheath derived in Proposition 1 expands the effective hydrodynamic exclusion radius to $R_{\text{eff}} = R(1 + \delta^*/R)$, yielding the Effective Interstitial Void Fraction for both the leading-order linear closure ($\delta^*/R = \frac{1}{2}\beta_{\text{TRT}} = 0.026960$) and the exact quadratic root ($\delta^*/R = 1 - \sqrt{1-\beta_{\text{TRT}}} = 0.027334$): \begin{equation} \epsilon_{\text{eff}}^{\text{(lin)}} = 1 - \phi_{\text{FCC}}\left(1 + \frac{1}{2}\beta_{\text{TRT}}\right)^3 = 0.19800 \approx 0.200, \qquad \epsilon_{\text{eff}}^{\text{(exact)}} = 1 - \phi_{\text{FCC}}\left(2 - \sqrt{1 - \beta_{\text{TRT}}}\right)^3 = 0.19712 \approx 0.200 \tag{17} \end{equation} Both roots agree to within $8.8 \times 10^{-4}$ ($0.4\%$ relative), establishing an effective interstitial void fraction of $\approx 20\%$.
2. Physical Derivation of the 1-Radian ($57.2958^\circ$) Acoustic Shear Stability Criterion: On a spherical coordination shell of radius $R$, two neighboring nucleon centers subtending central angle $\theta$ are separated by the spherical surface arc length $s(\theta) = R\,\theta$, while the fundamental radial standing wave of the central core has characteristic wavelength $\lambda_{\text{rad}} = R$. By the Helmholtz–Rayleigh acoustic interference criterion, two neighboring solitons maintain independent attractive Bjerknes pressure wells if and only if their surface arc separation $s(\theta)$ is at least one radial standing wavelength $\lambda_{\text{rad}} = R$: $s(\theta) = R\,\theta \ge \lambda_{\text{rad}} = R \iff \theta \ge 1\text{ radian} = \frac{180^\circ}{\pi} = 57.2958^\circ$ When $\theta < 1\text{ rad}$, adjacent surface acoustic wakes overlap within a single radial wavelength ($s(\theta) < R$), creating a constructive near-field shear-pressure spike that ruptures the Bjerknes potential well. For $N = 12$ outer spheres on a spherical shell, both the equal-radius FCC kissing angle $\theta_{\text{FCC}}(12) = 60.0000^\circ$ ($\pi/3\text{ rad}$) and the unconstrained icosahedral Tammes vertex maximum $\theta_{\text{Tammes}}(12) = \arccos(1/\sqrt{5}) = 63.4349^\circ$ strictly satisfy $\theta \ge 1\text{ rad}$ ($57.2958^\circ$). Forcing a $13\text{th}$ sphere onto the inner shell reduces the Tammes upper bound to $\theta_{\text{Tammes}}(13) = 57.1367^\circ < 1\text{ rad } (57.2958^\circ)$, violating $s(\theta) \ge R$ and inducing cavitation fission.

4.4 Bernoulli Derivation of the Hydrodynamic Cavitation Mass Floor

To derive the cavitation mass-floor step function from the Euler–Bernoulli pressure law, consider a localized rotational wave packet of kinetic energy $E_k$ $[\text{J}]$ confined within a fundamental wavelength core volume $V_{\text{core}}$ in the Plenum of ambient hydrostatic pressure $P_0 \equiv E_{\text{cav}} / V_{\text{core}}$. By the steady compressible Bernoulli theorem, the rotational kinetic energy density induces a core pressure drop $\Delta P_{\text{core}} = P_0 - P_{\text{core}} = E_k / V_{\text{core}}$. A hollow phase-locked vortex core nucleates (cavitates) if and only if the core absolute pressure drops to the vacuum vapor floor ($P_{\text{core}} \le 0 \iff \Delta P_{\text{core}} \ge P_0$), which yields the exact Cavitation Nucleation Condition $E_k \ge P_0 V_{\text{core}} = E_{\text{cav}} = A_{\text{RT}} h f_0$:

• For $E_k < E_{\text{cav}}$ ($P_{\text{core}} > 0$), the perturbation cannot nucleate a cavitated boundary wall and disperses as massless longitudinal acoustic radiation ($m = 0$).
• For $E_k \ge E_{\text{cav}}$ ($P_{\text{core}} \le 0$), cavitation locks in a topological boundary wall whose minimum threshold rest energy $E_{\text{min}} = E_{\text{cav}}$ corresponds by $m = E / c_0^2$ to the invariant mass floor $\mu_0 = E_{\text{cav}}/c_0^2 = 2.84140 \times 10^{-41}\text{ kg}$:

\begin{equation} m(E_k) = \mu_0 \cdot \Theta!\left(\frac{P_0 - P_{\text{core}}}{P_0} - 1\right) = \mu_0 \cdot \Theta!\left(\frac{E_k}{E_{\text{cav}}} - 1\right) = \left(\frac{A_{\text{RT}} h f_0}{c_0^2}\right) \Theta!\left(\frac{E_k}{A_{\text{RT}} h f_0} - 1\right) \tag{18} \end{equation} Every factor in Eq. (18) is dimensionally homogeneous ($[E_k / (A_{\text{RT}} h f_0)] = \text{J}/\text{J} = 1$ and $[\mu_0] = \text{kg}$). (Scope Qualification: Eq. (18) formulates a classical hydrodynamic cavitation mass-floor mechanism in the two-fluid Plenum rather than a constructive quantum field theory proof for pure $SU(N)$ Yang–Mills gauge fields on $\mathbb{R}^4$.)

5. Cosmological Wave-Attenuation Model & Resolution of the Hubble Tension

Physical Picture: Why do measurements of the early universe (via the Cosmic Microwave Background) infer a baseline expansion rate of $H_{\text{early}} = 67.40\text{ km s}^{-1}\text{Mpc}^{-1}$, while local supernova telescopes (SH0ES) measure $H_{\text{late}} = 73.04\text{ km s}^{-1}\text{Mpc}^{-1}$? In an empty vacuum, photon redshift can only arise from metric expansion, so an $+8.4\%$ jump in apparent redshift requires invoking a late-time "dark energy" acceleration. In the two-fluid Plenum, a 1D line-of-sight acoustic waveguide extending from the observer ($r = 0$, pressure antinode $\delta P'(0) = 0$) to the causal horizon ($r = R_H$, pressure node $\delta P(R_H) = 0$) supports the exact fundamental cosine standing mode $\delta P(r) = \delta P_0 \cos(k_1 r)$ whose first zero occurs at $k_1 R_H = \pi/2\text{ radians}$ ($90^\circ$ quarter-wave cavity). Across that $\pi/2\text{ rad}$ horizon phase, the $5.392\%$ normal-fluid component contributes an integrated acoustic attenuation susceptibility $\eta_{\text{TRT}} = \frac{\pi}{2}\beta_{\text{TRT}} = +0.0847$ ($+8.47\%$). When local distance-ladder surveys measure the total redshift slope $dz_{\text{obs}}/dd_L$, they observe the sum of baseline expansion and horizon-coupled acoustic attenuation: $67.40 \times (1 + 0.084698) = 73.11\text{ km s}^{-1}\text{Mpc}^{-1}$—matching the SH0ES measurement to $0.07\sigma$ without dark energy.

5.1 Exact Quarter-Wave Horizon Eigenmode ($k_1 R_H = \pi/2$) and the $+8.47\%$ Hubble Estimator Shift

We now derive the mathematical link between normal-fluid acoustic damping $\beta_{\text{TRT}}$ and the fractional discrepancy between early-universe CMB inferences ($H_{\text{early}} = 67.40 \pm 0.50\text{ km s}^{-1}\text{Mpc}^{-1}$ [8]) and local distance-ladder measurements ($H_{\text{late}} = 73.04 \pm 1.04\text{ km s}^{-1}\text{Mpc}^{-1}$ [9]).

1. Exact 1D Line-of-Sight Helmholtz Boundary-Value Problem ($k_1 R_H = \pi/2$): Along a 1D line-of-sight acoustic waveguide ray $r \in [0, R_H]$ connecting the observer at $r = 0$ to the causal Hubble horizon at $r = R_H = c_0 / H_{\text{early}} = 4,447.96\text{ Mpc}$, longitudinal pressure perturbations $\delta P(r)$ obey the 1D Helmholtz equation: $\frac{d^2\,\delta P(r)}{dr^2} + k^2\,\delta P(r) = 0, \qquad r \in [0, R_H]$ subject to mixed Neumann–Dirichlet quarter-wave resonator boundary conditions: $\text{(i) Observer pressure antinode: } \left.\frac{d\,\delta P}{dr}\right|_{r=0} = 0, \qquad \text{(ii) Causal horizon pressure node: } \delta P(R_H) = 0$ The unique general solution of $\delta P''(r) + k^2\delta P(r) = 0$ satisfying the Neumann condition $\delta P'(0) = -k\,\delta P_0 \sin(0) = 0$ is the exact cosine eigenfunction: $\delta P(r) = \delta P_0 \cos(k r)$ Imposing the Dirichlet horizon condition $\delta P(R_H) = \delta P_0 \cos(k R_H) = 0$ yields the exact eigenvalue spectrum $k_n R_H = \left(n - \frac{1}{2}\right)\pi$ for $n = 1, 2, 3, \dots$, whose fundamental mode ($n = 1$) has its exact first root at $k_1 R_H = \pi/2$: $k_1 R_H = \frac{\pi}{2} \implies \phi(r) \equiv k_1 r = \frac{\pi}{2}\frac{r}{R_H} \in \left[0, \frac{\pi}{2}\right], \qquad \Delta\phi = \phi(R_H) - \phi(0) = \frac{\pi}{2}\text{ rad}$ (Equivalently, in 3D spherical coordinates where $\frac{1}{r^2}\frac{d}{dr}(r^2 \frac{d\psi}{dr}) + k^2\psi = 0$, the canonical radial displacement potential $u(r) \equiv r\,\psi(r)$ satisfies $u''(r) + k^2 u(r) = 0$ with origin regularity $u(0) = 0$, giving $u(r) = u_0 \sin(kr)$; imposing the open-horizon Neumann condition $u'(R_H) = k u_0 \cos(k R_H) = 0$ likewise yields the exact fundamental eigenvalue $k_1 R_H = \pi/2$.)
2. Horizon Attenuation Susceptibility and Damped Photon Frequency ODE: By Proposition 1 (Section 2.2), normal-fluid relaxation damping extracts fractional wave energy $\beta_{\text{TRT}}$ per radian of cavity phase $d\phi = k_1 dr$. Integrating over the quarter-wave causal horizon $\phi \in [0, \pi/2]$ defines the Horizon Acoustic Attenuation Bias ($\eta_{\text{TRT}}$) and the corresponding spatial attenuation rate $\gamma_{\text{cav}} \equiv \eta_{\text{TRT}} / R_H$: \begin{equation} \eta_{\text{TRT}} \equiv \int_0^{\pi/2} \beta_{\text{TRT}},d\phi = k_1 R_H \beta_{\text{TRT}} = \frac{\pi}{2},\beta_{\text{TRT}} = \frac{\pi}{2}\left(0.05392055\right) = +0.084698 ; (+8.47%) \tag{19} \end{equation} Along a comoving photon path $r \in [0, d_L]$ in an expanding background of true metric rate $H_{\text{early}} = c_0 / R_H$ coupled to the cavity spatial attenuation rate $\gamma_{\text{cav}} = \frac{\eta_{\text{TRT}}}{R_H} = \frac{H_{\text{early}}}{c_0}\left(\frac{\pi}{2}\beta_{\text{TRT}}\right)$, the photon angular frequency $\omega(r)$ obeys the first-order differential equation: $\frac{1}{\omega}\frac{d\omega}{dr} = -\frac{H_{\text{early}}}{c_0} - \gamma_{\text{cav}} = -\frac{H_{\text{early}}}{c_0}\left(1 + \frac{\pi}{2}\beta_{\text{TRT}}\right), \qquad \omega(0) = \omega_{\text{emit}}$ Integrating from $r = 0$ to luminosity distance $r = d_L$ gives $1 + z_{\text{obs}}(d_L) \equiv \frac{\omega_{\text{emit}}}{\omega(d_L)} = \exp\!\left[\frac{H_{\text{early}} d_L}{c_0}\left(1 + \frac{\pi}{2}\beta_{\text{TRT}}\right)\right]$.
3. Exact Evaluation of the Local Distance-Ladder Estimator ($H_{\text{late, TRT}} > H_{\text{early}}$): Whereas early-universe CMB analysis [8] infers the background expansion rate $H_{\text{early}} = 67.40\text{ km s}^{-1}\text{Mpc}^{-1}$ from baryon-photon acoustic peaks at $z_* \approx 1090$, local Type Ia supernova surveys (SH0ES [9]) define the late-universe Hubble estimator from the low-redshift linear slope $H_{\text{late}} \equiv c_0 \left.\frac{dz_{\text{obs}}}{dd_L}\right|_{d_L \to 0}$. Differentiating $z_{\text{obs}}(d_L)$ at $d_L = 0$ yields the strictly positive estimator shift: \begin{equation} H_{\text{late, TRT}} \equiv c_0 \left.\frac{dz_{\text{obs}}}{dd_L}\right|{d_L \to 0} = H{\text{early}} \left(1 + \frac{\pi}{2}\beta_{\text{TRT}}\right) = 67.40 \times 1.084698 = 73.11\text{ km s}^{-1}\text{Mpc}^{-1} \tag{20} \end{equation} This predicted value ($73.11\text{ km s}^{-1}\text{Mpc}^{-1}$) agrees with the SH0ES measurement ($73.04 \pm 1.04\text{ km s}^{-1}\text{Mpc}^{-1}$ [9]) to within $0.07\sigma$ ($0.10\%$ relative error) without dark energy ($\Lambda$) or any modification to present-epoch local $c_0$.