Results 11 to 20 of about 8,711 (288)

An Improved Framework for Quantum Gravity

open access: yesUniverse, 2020
General relativity has two fundamental problems that render it unsuitable for tackling the gravitational field’s quantization. The first problem is the lack of a genuine gravitational variable representing gravitation only, inertial forces apart.
José G. Pereira, Diego F. López
doaj   +1 more source

Triply special relativity [PDF]

open access: yesPhysical Review D, 2004
We describe an extension of special relativity characterized by {\it three} invariant scales, the speed of light, $c$, a mass, $ $ and a length $R$. This is defined by a non-linear extension of the Poincare algerbra, $\cal A$, which we describe here. For $R\to \infty$, $\cal A$ becomes the Snyder presentation of the $ $-Poincare algebra, while for $
Jerzy Kowalski-Glikman, Lee Smolin
openaire   +3 more sources

Comment on ‘Quantum principle of relativity’

open access: yesNew Journal of Physics, 2023
Dragan and Ekert in the paper (2020 New. J. Phys. 22 033038) presented ‘quantum principle of relativity’ (QPR) based on Galilean principle of relativity, which involves both superluminal G _S and subluminal G _s families of observers and argue that then ...
Ryszard Horodecki
doaj   +1 more source

An alternative way to present a relativistic Lagrangian definition

open access: yesRevista Brasileira de Ensino de Física, 2021
As long we known, the non-relativistic Lagrangian definition, L = T − U with T and U as being, respectively, kinetic and potential energy, it is not valid at the relativistic level.
M.A. De Andrade, C. Neves
doaj   +1 more source

Correcting the Doppler Effect

open access: yesScience & Philosophy, 2023
Christian Doppler, an Austrian physicist, described in 1842 the apparent change in frequency of a wave when motion of the source or the observer is involved. Named after him, this change in observational frequencies is known as the Doppler Effect.
Denis Thomas
doaj   +1 more source

Homogeneously Modified Special relativity (HMSR)

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
This work explores a Standard Model extension possibility, that violates Lorentz invariance, preserving the space-time isotropy and homogeneity. In this sense HMSR represents an attempt to introduce an isotropic Lorentz Invariance Violation in the ...
Marco Danilo Claudio Torri   +2 more
doaj   +1 more source

Clocks without “Time” in Entangled-State Experiments

open access: yesEntropy, 2020
Entangled states of light exhibit measurable correlations between light detections at separated locations. These correlations are exploited in entangled-state quantum key distribution.
F. Hadi Madjid, John M. Myers
doaj   +1 more source

Newton mechanics, Galilean relativity, and special relativity in $\alpha$-deformed binary operation setting

open access: yesSciPost Physics Proceedings, 2023
We define new velocity and acceleration having dimension of $(Length)^{\alpha}/(Time)$ and $(Length)^{\alpha}/(Time)^2,$ respectively, based on the fractional addition rule.
Won S. Chung, Mahouton N. Hounkonnou
doaj   +1 more source

A New Perspective on Doubly Special Relativity

open access: yesUniverse, 2023
Doubly special relativity considers a deformation of the special relativistic kinematics parametrized by a high-energy scale, in such a way that it preserves a relativity principle.
J. M. Carmona   +3 more
doaj   +1 more source

Theory of Gravity Dependent on Entropy

open access: yesReports in Advances of Physical Sciences, 2023
Gravitational redshift decreases the resolution of measurements, causing entropy by increasing the possible microstates of position and momentum for objects within a gravitational field.
Christopher N. Watson
doaj   +1 more source

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