Results 131 to 140 of about 25,203 (212)

Violating Lorentz Invariance Minimally by the Emergence of Nonmetricity? A Perspective

open access: yesAnnalen der Physik
AbstractLorentz invariance belongs to the fundamental symmetries of nature. It is basic for the successful Standard Model of Particle Physics. Nevertheless, within the last decades, Lorentz invariance has been repeatedly questioned. In fact, there exist different research programs addressing this problem. It is argued that a most adequate understanding
Yuri N. Obukhov, Friedrich W. Hehl
openaire   +3 more sources

Probing for Lorentz Invariance Violation in Pantheon Plus Dominated Cosmology

open access: yesUniverse
The Hubble tension in cosmology is not showing signs of alleviation and thus, it is important to look for alternative approaches to it. One such example would be the eventual detection of a time delay between simultaneously emitted high-energy and low ...
Denitsa Staicova
doaj   +1 more source

Deriving Gauge Symmetry and Spontaneous Lorentz Violation

open access: yes, 2009
We consider a class of field theories with a four-vector field $A_{\mu}(x)$ in addition to other fields supplied with a global charge symmetry - theories which have partial gauge symmetry in the sense of only imposing it on those terms in the Lagrangian ...
Azatov   +19 more
core   +2 more sources

Lorentz Invariance Violation on UHECR propagation

open access: yesJournal of Physics: Conference Series, 2013
In the present work possible consequences of the Lorentz symmetry breaking are presented. Those consequences are encoded through the modification of dispersion relations which are applied to the processes of pair and pion photo production generated at UHECR scale.
H Martínez, A Pérez-Lorenzana
openaire   +1 more source

Study of Lorentz invariance violation in polarized top quark decay

open access: yesEuropean Physical Journal C: Particles and Fields
Different processes have yet studied the effect of Lorentz symmetry violation and different limits have determined for the Lorentz violation (LV) coefficients.
Taghi Ebrahimi   +2 more
doaj   +1 more source

CPT and Lorentz Invariance: Their Relation and Violation

open access: yesJournal of Physics: Conference Series, 2013
The CPT theorem in quantum field theory, its validity, breaking and consequences are reviewed. One can show that for CPT theorem to hold, Lorentz invariance is not always needed. Also one can have CPT violation, while there is Lorentz invariance. Field theoretical examples for both cases are given and mass differences between particle-antiparticle are ...
openaire   +2 more sources

Searches for violation of Lorentz invariance in top quark pair production using dilepton events in 13 TeV proton-proton collisions

open access: yesPhysics Letters B
A search for violation of Lorentz invariance in the production of top quark pairs (tt‾) is presented. The measured normalized differential tt‾ production cross section, as a function of the sidereal time, is examined for potential modulations induced by ...
A. Hayrapetyan   +2330 more
doaj   +1 more source

LIV-decoherence on gravitational cat states

open access: yesPhysics Letters B
Inspired by approaches based on the stochastic generalized uncertainty principle, we propose a Lindblad equation derived from the quantization of a stochastic modified dispersion relation in a Lorentz Invariance Violation (LIV) scenario.
Iarley P. Lobo   +4 more
doaj   +1 more source

A way forward for fundamental physics in space. [PDF]

open access: yesNPJ Microgravity, 2022
Bassi A   +14 more
europepmc   +1 more source

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