Relativity and Cosmology

2610 Submissions

[14] viXra:2610.0104 [pdf] submitted on 2026-10-29 20:32:24

The Paradigm of the Helical Universe

Authors: Jamal S. Shrair
Comments: 47 Pages. (Note by viXra Admin: Please use scholarly/modest language!)

A deep and sophisticated analysis shows that all observations and empirical phenomena—from the subatomic to the cosmological scale, including the structure and function of DNA and RNA—can be explained accurately and rationally by the Helical Universe Model and its fundamental concept, the Magnetic Structure of Matter.
Category: Relativity and Cosmology

[13] viXra:2610.0098 [pdf] submitted on 2026-10-27 20:44:11

Determination of One-Way Speed of Light in a Material Medium According to the Special Theory of Ether (In Polish)

Authors: Karol Szostek
Comments: 12 Pages. In Polish

In the article, was derived formulas for one-way speed of light in vacuum and materialmedium. One-way speed of light is one of the important elements that distinguishes Special Theoryof Relativity [4] from Special Theory of Ether [31]. The derived formula is valid for all possible Special Theories of Aether. The calculations are performed within the Special Theories of Ether, assuming the zero result of the Michelson-Morley and Kennedy-Thorndike experiments, i.e., assuming that the average speed of light in the material medium's own frame, on the outward and return paths, is constant.
Category: Relativity and Cosmology

[12] viXra:2610.0094 [pdf] submitted on 2026-10-25 12:03:18

Is Mond an Effect of Cosmic Frame-Dragging à la Mach?

Authors: Manuel Uruena Palomo
Comments: 8 pages, 5 figures, accepted for publication in European Physical Journal C (EPJC). Comments are welcome

The physical origin of Modified Newtonian Dynamics (MOND), which predicts galaxy rotation curves via a single empirical acceleration constant $a_0$ without the need for dark matter, remains unknown. I propose a modified-inertia origin for both MOND's interpolating function and $a_0$ within a framework closely related to Gravitoelectromagnetism, the linearized limit of General Relativity. Following Sciama's model unifying gravity and inertia, which implements Mach's principle and the relativity of acceleration through gravitoelectric induction, I consider an idealized homogeneous universe undergoing constant Hubble expansion. I identify $a_0 sim H_0^2R_u sim c^2/R_u$ with the relative recession acceleration of cosmic matter near the horizon, which dominates the cosmological contribution. I show that this scale enters local inertial dynamics only when the relative acceleration of the universe becomes anisotropic and the Rindler horizon is comparable to or larger than the cosmic Hubble horizon, at accelerations of order $a_0$ and below. By the simplest Ansatz for the observer’s acceleration-dependent causal volume, accounting for the interplay between the cosmic and Rindler horizons, I derive MOND's simple interpolating function as a modified inertia law without the need to insert it by hand or make any further ad hoc adjustments. Physically, the region brought into causal connection ahead of the accelerating observer by the deformation of the cosmic horizon contributes less inertial drag than is lost from the region removed behind him by the Rindler horizon. This proof of concept motivates the possibility that MOND arises from large-scale linear inertial frame-dragging induced by the expanding Universe within General Relativity.
Category: Relativity and Cosmology

[11] viXra:2610.0091 [pdf] submitted on 2026-10-24 05:05:31

Possible Hubble Tension Resolution

Authors: Eric Louis Beaubien
Comments: 4 Pages.

The discrepancy between the CMB/BAO measure of H0 and Type 1A measurements might be resolved by a change in light velocity as a function of a changing fine structure constant here considered as a measure of the ‘physical tension’ of space that supports light velocity.
Category: Relativity and Cosmology

[10] viXra:2610.0086 [pdf] submitted on 2026-10-25 02:46:08

Reply to the Unjustified Comments by Justo Pastor Lambare in His Work "Noninertial Reference Frames in Special Relativity"

Authors: Espen Gaarder Haug, Gianfranco Spavieri
Comments: 9 Pages.

Wepresent a critical reply to the analysis of noninertial reference frames in specialrelativity recently put forward by Justo Pastor Lambare [1]. While Lambare explores the application of special relativity to accelerated systems via the hypothesis of locality, his discussion overlooks crucial foundational insights established in optical and relativistic physics over the past century. Specifically, he fails to notice thatthe linear Wang-Sagnac effect proves that Sagnac-type phenomena are fundamentally independent of noninertiality. Furthermore, contrary to Lambare’s claim, the local differential speed utilized in his derivations corresponds precisely to the variantGalilean speed (or Selleri/LTA transformations), confirming that the one-way speed of light is not invariant for a moving observer. Accounting for spacetime continuity breach under standard Lorentz transformations (LT) and incorporating advances from classical entanglement synchronization and alternative relativistic frameworks (LTA), we establish that a viable interpretation of relativistic paradoxes requires coordinate transformations based on absolute simultaneity and light-speed variance.
Category: Relativity and Cosmology

[9] viXra:2610.0082 [pdf] submitted on 2026-10-20 21:35:45

Uniformly Accelerated Motion Observed from a Perpendicularly Moving Inertial Frame:Kinematics and Energy-Momentum Transformation

Authors: Sangwha Yi
Comments: 8 Pages.

We analyze the motion of a point particle executing uniformly accelerated motion(constant proper acceleration) from rest in an inertial frame S', as observed from a second inertial frame S whose velocity relativity to S is perpendicular to the acceleration axis.Starting from the Lorentz transformation for a perpendicular boost, we derive the complete kinematics of the particle in S.
Category: Relativity and Cosmology

[8] viXra:2610.0075 [pdf] submitted on 2026-10-19 15:24:40

N-Body Dynamics via Curvature of Wave Propagation: A Flat-Space Framework Matching GR Solar-System and EHT Constraints

Authors: Morris G. Anderson
Comments: Pages.

The curvature of wave propagation method (CWPM) models gravity in flat three-dimensional Euclidean space, capturing both weak- and strong-field regimes. Gravitational effects arise solely from the spatial gradient of the speed of light, wave—particle duality, and the resulting curvature of wave propagation, which together yield an explicit, closed-form, velocity-dependent acceleration vector that is analytically more compact and natively simpler to implement than the complex Parameterized Post-Newtonian (PPN) expansion series. CWPM N-body simulations reproduce the classical solar-system tests of general relativity—including Mercury’s perihelion advance, light deflection, and Shapiro delay—while executing up to five times faster than PPN integrations. A 15-body simulation confirms Mercury’s precession and demonstrates convergence under time-step refinement. Independent implementation and testing by Kuijpers (2025) in his pre-existing Solar System Simulator confirms CWPM matches GR-based PPN DE405-referenced deviations to within <30 km RMS over 600 years, while running ~5× faster. Although CWPM places the photon orbital radius at the Schwarzschild radius Rs = 2GM/c² (rather than 1.5 Rs in GR), it predicts a black-hole shadow diameter of 2eRs, only ~4.6% larger than the GR value—well within Event Horizon Telescope uncertainties for both M87* and Sgr A*. Included MATLAB scripts enable students and researchers to compute solar-system orbits, light propagation, black-hole shadows, star-cluster dynamics, and deep-space trajectories using a unified framework based on a single explicit equation of motion, offering an accessible, computationally efficient learning tool for physics education and independent research.
Category: Relativity and Cosmology

[7] viXra:2610.0073 [pdf] submitted on 2026-10-18 09:31:49

Lorentz vs Einstein: The Man Who Apparently Didn’t Understand His Own Equations

Authors: Ion Vlad
Comments: 23 Pages.

Special relativity has survived a century of scrutiny, countless textbooks, and the occasional suspicion that its founder might have understood it correctly. This paper revisits Lorentz’s transformations, simultaneity, the twin paradox, the ladder paradox, and the train-and-lightning thought experiment, arguing that the mathematics is considerably less controversial than its interpretation. By distinguishing physical events from their frame-dependent coordinate labels, we propose a Lorentz-consistent reinterpretation that challenges conventional readings without having the audacity to discard the equations themselves. The central question is deceptively simple: how did Lorentz’s mathematics acquire an interpretation that apparently required Einstein to explain it better than Lorentz? The implications for spacetime diagrams and relativistic paradoxes are explored, in the hope that history itself may yet be transformed—and that Lorentz might finally receive the credit that Einstein’s shadow has so long denied him.
Category: Relativity and Cosmology

[6] viXra:2610.0068 [pdf] submitted on 2026-10-17 23:28:37

Unexpectedly High Stellar Velocities in a Spiral Nebula

Authors: Henk Dorrestijn
Comments: 12 Pages. hjdorrestijn@gmail.com

Dark matter has been proposed by the scientific establishment as a solution to the inexplicably high velocities of stars within the disk of a spiral galaxy. However, dark matter itself proves to be equally inexplicable; after decades of searching, its nature remains unknown. Furthermore, the high stellar velocities themselves have never been fully explained. In this article, we propose an alternative interpretation of gravity, in which mass is quantified based on the extent to which it obstructs the view of the universe. This allows us to explain why a star gains velocity at the expense of the speed of stars orbiting closer to the galactic center. Using the Triangulum Galaxy as an example, we demonstrate that the calculated velocity is of the same order of magnitude as the observed velocities.
Category: Relativity and Cosmology

[5] viXra:2610.0039 [pdf] submitted on 2026-10-10 23:26:04

Torsion in Disguise: Scalar-Gradient Contortion, Bosonic Triviality, and the Spin Coupling that Survives

Authors: Renato Vieira dos Santos
Comments: 6 Pages.

When a geometric modification of spacetime is equivalent, by a field redefinition, to a theory we already know, does anything physical survive the equivalence? We examine a metric-compatible contortion of the form $K^lambda_{ muu} = F(phi),epsilon^{lambdaho}_{ muu},partial_hophi$, generated by the gradient of a scalar field and totally antisymmetric in its three indices, which is unique within its class once one requires that spinless particles follow the geodesics of general relativity. The Ricci scalar acquires a correction $R(Gamma) = R({}) + 6F^2(partialphi)^2$ that shifts the scalar kinetic term by a factor $1 - 6F^2/kappa_g$, yielding a ghost bound $M_F > 0.49,M_{m Pl}$, and the Schwarzschild metric remains an exact vacuum solution when the scalar field is constant. We show that the bosonic sector is equivalent, by a field redefinition, to a canonical scalar field minimally coupled to general relativity, so that the modification of the Kalb-Ramond duality is a statement about the parametrization rather than about the physical spectrum. The survival of a residual coupling in the matter sector is not specific to this construction, since it also occurs in the Jordan-Einstein frame equivalence of scalar-tensor theories, but the form of the surviving coupling is. Here the residual coupling is parity-odd, spin-dependent, and non-universal, affecting only matter with spin. We estimate the magnitude of this force in a cosmological background and find it to be far below observational sensitivity; we do not claim that it becomes observable in regimes that we have not calculated.
Category: Relativity and Cosmology

[4] viXra:2610.0028 [pdf] submitted on 2026-10-08 23:59:01

Cosmological Time Dilation

Authors: Werner Lange
Comments: 4 Pages. In German

This paper explains how the form of time dilation caused solely by the expansion of the universe can be modelled using light emission and light reception on different light cones.
Category: Relativity and Cosmology

[3] viXra:2610.0024 [pdf] replaced on 2026-11-08 17:20:51

The Decelerated Universe: Differential Validation via Type Ia Supernovae

Authors: Dino Bruniera
Comments: 12 Pages.

This paper introduces a comprehensive cosmological model based on the theory of Expanding Space Quanta (ESQ), providing a realistic and geometric description of cosmic evolution as a radical alternative to the standard ΛCDM paradigm. Derived from an inverse cosmological luminosity equation founded on the pure three-dimensionality of expanded space (1 + z)³, this model enables the empirical verification and falsifiability of cosmic distances without introducing arbitrary free parameters or unobservable entities. Through a foundational kinematic analysis of cosmological redshift (z) — experimentally defined as an indicator of the average expansion velocity during total photonic travel time (Vm = c · z) — we establish a linear geometric closure equation to determine the actual real distance (Df). Furthermore, by applying infinitesimal differential calculus to global Type Ia Supernovae (SNe Ia) observational databases, including the recent Hubble diagrams from NOIRLab/DESI, we map the evolution of instantaneous expansion velocities (Vist) across regular time intervals. The resulting quantitative trajectory, formalized in a dedicated Cartesian grid, mathematically demonstrates a continuous, smooth, and progressive deceleration of spatial expansion from primordial epochs to the present day, radically refuting the Dark Energy hypothesis. The ESQ model resolves the profound epistemological and thermodynamic paradoxes of orthodox cosmology, strictly adhering to the Principle of Conservation of Energy (First Principle of Thermodynamics) and satisfying the methodological criteria of Occam's Razor. The intrinsic geometric foundations of this theoretical model and the conceptual transition from standard mathematical space to the three-dimensional physics of Expanding Space Quanta were formally outlined by the Author in the propedeutic study titled "From Apparent to Real Universe".
Category: Relativity and Cosmology

[2] viXra:2610.0019 [pdf] submitted on 2026-10-06 00:23:26

A Vector Field Formulation of the Metric Tensor in General Relativity: Theoretical Foundations and Astrophysical Implications

Authors: Ali Rıza Şahi̇n
Comments: 8 Pages.

The general theory of relativity fundamentally relies on the metric tensor to describe gravitational phenomena, traditionally eschewing the vector field formulations ubiquitous in electrodynamics and quantum field theories. This study introduces a novel framework that defines the spacetime metric and its inverse via a set of underlying vector fields. By expressing the metric tensor in terms of these fields, we derive the corresponding geodesic and Einstein field equations, revealing striking structural parallels with electrodynamics—most notably, the natural emergence of a covariant Lorentz-like force and a stress-energy tensor mathematically analogous to that of electromagnetic fields. To demonstrate the astrophysical viability of this approach, we solve the equations for a spherically symmetric, static mass distribution, yielding a non-singular alternative to the Schwarzschild metric. The practical validity of this metric is subsequently tested through the recalculation of the perihelion precession of planets and the gravitational deflection of light. The results provide precise agreement with perihelion precession observations while predicting a slightly modified value for light deflection (1.90 arcsec), offering a potential theoretical basis for the historical discrepancies observed between visible light and radio wave measurements during solar eclipses.
Category: Relativity and Cosmology

[1] viXra:2610.0018 [pdf] replaced on 2026-10-15 22:18:36

Constant Spacetime Velocity and Time Dilation

Authors: Stephen W. Hosier
Comments: 7 Pages.

Spacetime velocity and related time dilation, are presented in a clearer and simpler format. Many example calculations are shown to demonstrate the simplicity of this approach.
Category: Relativity and Cosmology