Density Field Dynamics

A scalar-refractive approach to gravitational phenomenology

Gary Alcock, Independent Researcher · ORCID: 0009-0009-5682-6518 · garyalcock.com

Independent research program in scalar-refractive gravity and precision metrology; open to experimental collaboration on nuclear clock tests (229Th), cross-species atomic comparisons, and cavity–atom residual measurements.

Overview

Density Field Dynamics (DFD) is a scalar-tensor framework in which a refractive field ψ governs both photon propagation (n = eψ) and test-mass acceleration (a = c²/2 ∇ψ). The theory reproduces standard post-Newtonian predictions in the weak-field limit while making distinct predictions for optical clock comparisons, cavity–atom frequency ratios, and galactic rotation curves.

The extended framework derives α−1 = 137.036 and nine fermion masses from CP²×S³ topology with zero continuous fit parameters.

This site archives preprints, data packages, and experimental proposals associated with this research program. All documents are preprints unless otherwise noted.

Papers and Preprints

Ab Initio Derivation of the Fine-Structure Constant from Density Field Dynamics

Dec 2025

Lattice Monte Carlo verification of α emergence from Chern-Simons quantization on S³. 86 independent runs across lattice sizes L=4–12 with kmax=60 yield α−1=137.036 with deviation <0.1% from experiment. No fitted parameters.

Two Numerical Relations Linking the Fine-Structure Constant to Gravitational Phenomenology

Dec 2025

Parameter-free predictions connecting α to gravitational observables: MOND acceleration scale a0=2√α·cH0 and gravitational clock coupling kα=α²/(2π)≈8.5×10−6. Both testable with current optical clock technology.

kα and the a² Invariant: A Unified Acceleration Scale from Galaxies to Atomic Clocks

Dec 2025

Derives the α-relations from scalar self-coupling structure. Extends predictions to strong-field regimes and provides clock comparison signatures at the 10−5 level across multiple atomic species.

Solar-Locked Differential in Ion–Neutral Optical Frequency Ratios

Oct 2025

Analysis of published ROCIT frequency ratio data (Yb+/Sr) revealing perihelion-locked modulation: amplitude A=(−1.045±0.078)×10−17 with period matching Earth's orbital eccentricity. Consistent with sector-differential ψ coupling; independent replication encouraged.

Parametrized Post-Newtonian Analysis of Density Field Dynamics

Sep 2025

Complete PPN expansion in the weak-field, slow-motion limit. All ten PPN parameters match General Relativity at 1PN order: γ=β=1, ξ=α1231234=0. DFD is observationally indistinguishable from GR for all current solar system tests.

Completing Local Position Invariance Tests: A Cavity–Atom Frequency Ratio Protocol

Sep 2025

Experimental protocol for testing LPI via altitude-separated comparisons of cavity-stabilized and atomic transition frequencies. Predicts non-null slope at 10−5 level distinguishing DFD from GR. Suitable for JILA, PTB, NIST, or NPL implementation.

Strong Fields and Gravitational Waves in Density Field Dynamics

Sep 2025

Extension to strong-field regime: photon sphere locations, black hole shadow predictions, and gravitational wave propagation. Tensor wave speed cT=c exactly, satisfying GW170817 constraint. All parameterized post-Einsteinian (ppE) bounds satisfied.

Well-Posedness and Boundary Value Problems for the ψ Equation

Sep 2025

Rigorous PDE analysis of the DFD field equation. Establishes existence, uniqueness, and regularity of weak solutions in appropriate Sobolev spaces. Proves energy conservation and derives asymptotic boundary conditions.

Accidental and Intentional Constraints on EM→ψ Back-Reaction

Sep 2025

Laboratory bounds on electromagnetic coupling to ψ from cavity stability measurements. Constrains back-reaction parameter |λ−1|≲3×10−5, demonstrating consistency with precision metrology and identifying future experimental sensitivity targets.

Matter-Wave Interferometry Tests of Density Field Dynamics

Sep 2025

Predicted signatures in atom interferometers: T³ phase scaling (versus T² for Newtonian gravity) in long-baseline configurations. Quantitative predictions for Stanford 10m tower and proposed satellite experiments.

Density Field Dynamics and the c-Field

Aug 2025

Foundational paper establishing the core framework: field equations for ψ, energy-momentum conservation, recovery of Newtonian limit, and classical test predictions. Introduces the optical-refractive interpretation of gravitational phenomenology.

Data and Code

Open datasets and analysis code for independent verification:

Background