Results 111 to 120 of about 37,959 (230)
Lorentz violation in Dirac and Weyl semimetals
Physical Review Research, 2022 We propose a correspondence between the description of emergent Lorentz symmetry in condensed-matter systems and the established general effective field theory for Lorentz violation in fundamental theories of spacetime and matter. This correspondence has
V. Alan Kostelecký +4 more
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Bounds on Lorentz and CPT Violation from the Earth-Ionosphere Cavity
, 2008 Electromagnetic resonant cavities form the basis of many tests of Lorentz invariance involving photons. The effects of some forms of Lorentz violation scale with cavity size.
A. A. Michelson +15 more
core +1 more source
Astronomische Nachrichten, Volume 346, Issue 7-8, September 2025.ABSTRACT We investigate the effects of a minimal measurable length on neutron stars, within the quantum hadrodynamics (QHD‐I) model modified by the Generalized Uncertainty Principle (GUP). Working in a deformed Poisson algebra framework, we incorporate GUP effects via a time‐invariant transformation of the phase space volume, effectively reducing the ...
João Gabriel Galli Gimenez +2 more
wiley +1 more source
Parameter estimation for a Lorentz invariance violation [PDF]
International Journal of Modern Physics D, 2019 We employ techniques from quantum estimation theory (QET) to estimate the Lorentz violation parameters in the (1+3)-dimensional flat spacetime. We obtain and discuss the expression of the quantum Fisher information (QFI) in terms of the Lorentz violation parameter [Formula: see text] and the momentum [Formula: see text] of the created particles.
H. A. S. Costa +2 more
openaire +3 more sources
Galileo's ship and the relativity principle
Noûs, Volume 59, Issue 3, Page 585-611, September 2025.Abstract It is widely acknowledged that the Galilean Relativity Principle, according to which the laws of classical systems are the same in all inertial frames in relative motion, has played an important role in the development of modern physics. It is also commonly believed that this principle holds the key to answering why, for example, we do not ...
Sebastián Murgueitio Ramírez
wiley +1 more source
Using artificial neural networks in searches for Lorentz invariance violation [PDF]
EPJ Web of ConferencesLorentz invariance violation (LIV) in gamma rays can have multiple consequences, such as energy-dependent photon group velocity, photon instability, vacuum birefringence, and modified electromagnetic interaction.
Terzić Tomislav
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European Physical Journal C: Particles and Fields, 2021 Theoretical models and experimental observations suggest that gamma-ray bursts (GRB) and high-energy neutrino bursts travelling through the interstellar space may reach the Earth at different speeds.
I. Brevik, M. Chaichian, M. Oksanen
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Information and Particle Physics
, 2011 Information measures for relativistic quantum spinors are constructed to satisfy various postulated properties such as normalisation invariance and positivity.
Buck B. +8 more
core +1 more source
Noûs, Volume 59, Issue 3, Page 700-728, September 2025.Abstract Expected utility theory often falls silent, even in cases where the correct rankings of options seems obvious. For instance, it fails to compare the Pasadena game to the Altadena game, despite the latter turning out better in every state. Decision theorists have attempted to fill these silences by proposing various extensions to expected ...
Hayden Wilkinson
wiley +1 more source
Lorentz Invariance Violation and Modified Hawking Fermions Tunneling Radiation
Advances in High Energy Physics, 2016 Recently the modified Dirac equation with Lorentz invariance violation has been proposed, which would be helpful to resolve some issues in quantum gravity theory and high energy physics.
Shu-Zheng Yang +3 more
doaj +1 more source