Results 11 to 20 of about 25,203 (212)

Lorentz invariance violation with gamma rays [PDF]

Nuclear and Particle Physics Proceedings, 2015
The assumption of Lorentz invariance is one of the founding principles of Modern Physics and violation of it would have profound implications to our understanding of the universe. For instance, certain theories attempting a unified theory of quantum gravity predict there could be an effective refractive index of the vacuum; the introduction of an ...
M K Daniel
exaly   +3 more sources

Signatures of Lorentz Violation in Continuous Gravitational-Wave Spectra of Ellipsoidal Neutron Stars

Galaxies, 2021
We studied the effects of the Lorentz invariance violation on the rotation of neutron stars (NSs) in the minimal gravitational Standard-Model Extension framework, and calculated the quadrupole radiation generated by them.
Rui Xu, Yong Gao, Lijing Shao
doaj   +1 more source

A bound on violations of Lorentz invariance [PDF]

Physics Letters B, 1999
7 pages, 1 ...
Cowsik, R., Sreekantan, B. V.
openaire   +2 more sources

Violation of the Landau-Yang theorem from infrared Lorentz symmetry breaking

Journal of High Energy Physics, 2023
Lorentz symmetry forbids decays of massive spin-1 particle like the Z 0 into two massless photons, a result known as the Landau-Yang theorem. But it is known that infrared effects can break Lorentz invariance. Employing the construction of Mund et al. [1]
M. Asorey, A. P. Balachandran, M. Arshad Momen, B. Qureshi   +3 more
doaj   +1 more source

Neutron star structure in the minimal gravitational Standard-Model Extension and the implication to continuous gravitational waves

Physics Letters B, 2020
Tiny violation of Lorentz invariance has been the subject of theoretic study and experimental test for a long time. We use the Standard-Model Extension (SME) framework to investigate the effect of the minimal Lorentz violation on the structure of a ...
Rui Xu, Junjie Zhao, Lijing Shao
doaj   +1 more source

Lorentz Invariance Violation with KM3NeT/ORCA115

Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023), 2023
Lorentz invariance (LI) underlies both the Standard Model of particle physics and General Relativity, and it represents our understanding of the nature of spacetime. It is therefore of fundamental interest to test its validity in every accessible regime as this would allow us to probe the microscopic structure of space-time and to constrain quantum ...
Domi A., Aiello S., Albert A., Alves Garre S., Aly Z., Ambrosone A., Ameli F., Andre M., Androutsou E., Anguita M., Aphecetche L., Ardid M., Ardid S., Atmani H., Aublin J., Bailly-Salins L., Bardacova Z., Baret B., Bariego-Quintana A., Basegmez du Pree S., Becherini Y., Bendahman M., Benfenati F., Benhassi M., Benoit D. M., Berbee E., Bertin V., Biagi S., Boettcher M., Bonanno D., Boumaaza J., Bouta M., Bouwhuis M., Bozza C., Bozza R. M., Branzas H., Bretaudeau F., Bruijn R., Brunner J., Bruno R., Buis E., Buompane R., Busto J., Caiffi B., Calvo D., Campion S., Capone A., Carenini F., Carretero V., Cartraud T., Castaldi P., Cecchini V., Celli S., Cerisy L., Chabab M., Chadolias M., Chen A., Cherubini S., Chiarusi T., Circella M., Cocimano R., Coelho J. A. B., Coleiro A., Coniglione R., Coyle P., Creusot A., Cruz A., Cuttone G., Dallier R., Darras Y., De Benedittis A., De Martino B., Decoene V., Del Burgo R., Di Cerbo U. M., Di Mauro L. S., Di Palma I., Diaz A. F., Diaz C., Diego-Tortosa D., Distefano C., Domi A., Donzaud C., Dornic D., Dorr M., Drakopoulou E., Drouhin D., Dvornicky R., Eberl T., Eckerova E., Eddymaoui A., van Eeden T., Eff M., van Eijk D., El Bojaddaini I., El Hedri S., Enzenhofer A., Ferrara G., Filipovic M. D., Filippini F., Franciotti D., Fusco L. A., Gabriel J., Gagliardini S., Gal T., Garcia Mendez J., Garcia Soto A., Gatius Oliver C., Geisselbrecht N., Ghaddari H., Gialanella L., Gibson B. K., Giorgio E., Goos I., Goupilliere D., Gozzini S. R., Gracia R., Graf K., Guidi C., Guillon B., Gutierrez M., van Haren H., Heijboer A., Hekalo A., Hennig L., Hernandez-Rey J. J., Huang F., Idrissi Ibnsalih W., Illuminati G., James C. W., de Jong M., de Jong P., Jung B. J., Kalaczynski P., Kalekin O., Katz U. F., Khan Chowdhury N. R., Khatun A., Kistauri G., Kopper C., Kouchner A., Kulikovskiy V., Kvatadze R., Labalme M., Lahmann R., Larosa G., Lastoria C., Lazo A., Le Stum S., Lehaut G., Leonora E., Lessing N., Levi G., Lindsey Clark M., Longhitano F., Majumdar J., Malerba L., Mamedov F., Manczak J., Manfreda A., Marconi M., Margiotta A., Marinelli A., Markou C., Martin L., Martinez-Mora J. A., Marzaioli F., Mastrodicasa M., Mastroianni S., Micciche S., Miele G., Migliozzi P., Migneco E., Mitsou M. L., Mollo C. M., Morales-Gallegos L., Morley-Wong C., Moussa A., Mozun Mateo I., Muller R., Musone M. R., Musumeci M., Nauta L., Navas S., Nayerhoda A., Nicolau C. A., Nkosi B., Fearraigh B. O., Oliviero V., Orlando A., Oukacha E., Paesani D., Palacios Gonzalez J., Papalashvili G., Parisi V., Pastor Gomez E. J., Paun A. M., Pavalas G. E., Pena Martinez S., Perrin-Terrin M., Sanguineti M., Taiuti M., Veutro A., Zegarelli A.   +203 more
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Trajectories of astroparticles in pseudo-Finsler spacetime with the most general modified dispersion

European Physical Journal C: Particles and Fields, 2023
Finsler geometry is a natural and fundamental generalization of Riemann geometry, and is a tool to research Lorentz invariance violation. We find the connection between the most general modified dispersion relation and a pseudo-Finsler structure, and ...
Jie Zhu, Bo-Qiang Ma
doaj   +1 more source

Mapping Lorentz invariance violations into equivalence principle violations [PDF]

Physics Letters B, 1999
We point out that equivalence principle violations, while not dynamically equivalent, produce the same kinematical effects as Lorentz invariance violations for particle processes in a constant gravitational potential. This allows us to translate many experimental bounds on Lorentz invariance violations into bounds on equivalence principle violations ...
Halprin, A., Kim, H. B.
openaire   +2 more sources

Searches for Lorentz Invariance Violation at the Pierre Auger Observatory [PDF]

EPJ Web of Conferences, 2023
Lorentz Invariance (LI) requires the space-time structure to be the same for all observers, but various quantum gravity theories suggest that it may be violated when approaching the Planck scale. Even a small violation of LI could easily affect the Ultra-
Trimarelli Caterina
doaj   +1 more source

Cosmic Searches for Lorentz Invariance Violation

, 2023
To appear as a chapter in the book "Modified and Quantum Gravity - From Theory to Experimental Searches on All Scales", C. L\"ammerzahl and C. Pfeifer editors.
Heros, Carlos Pérez de los, Terzić, Tomislav   +1 more
openaire   +2 more sources