Time delays, choice of energy-momentum variables, and relative locality in doubly special relativity

Carmona, J.M. (Universidad de Zaragoza) ; Cortés, J.L. (Universidad de Zaragoza) ; Relancio, J.J. ; Reyes, M.A. (Universidad de Zaragoza)

Resumen: Doubly special relativity (DSR) theories consider (quantum-gravity motivated) deformations of the symmetries of special relativity compatible with a relativity principle. The existence of time delays for massless particles, one of their proposed phenomenological consequences, is a delicate question since, contrary to what happens with Lorentz invariance violation scenarios, they are not simply determined by the modification in the particle dispersion relation. While some studies of DSR assert the existence of photon time delays, in this paper we generalize a recently proposed model for time delay studies in DSR and show that the existence of photon time delays does not necessarily follow from a DSR scenario, determining in which cases this is so. Moreover, we clarify long-standing questions about the arbitrariness in the choice of the energy-momentum labels and the independence of the time delay on this choice, as well as on the consistency of its calculation with the relative locality paradigm of DSR theories. Finally, we show that the result for time delays is reproduced in models that consider propagation in a noncommutative spacetime.

Idioma: Inglés

DOI: 10.1103/PhysRevD.106.064045

Año: 2022

Publicado en: Physical Review D 106, 6 (2022), 064045 [12 pp.]
ISSN: 2470-0010

Factor impacto JCR: 5.0 (2022)

Categ. JCR: PHYSICS, PARTICLES & FIELDS rank: 7 / 29 = 0.241 (2022) - Q1 - T1
Categ. JCR: ASTRONOMY & ASTROPHYSICS rank: 15 / 69 = 0.217 (2022) - Q1 - T1

Factor impacto CITESCORE: 9.2 - Physics and Astronomy (Q1)

Factor impacto SCIMAGO: 1.639 - Physics and Astronomy (miscellaneous) (Q1) - Nuclear and High Energy Physics (Q1)

Financiación: info:eu-repo/grantAgreement/ES/AEI/PID2019-106802GB-I00
Financiación: info:eu-repo/grantAgreement/ES/AEI/PRE2019-089024
Financiación: info:eu-repo/grantAgreement/EUR/COST-Action/CA18108
Financiación: info:eu-repo/grantAgreement/ES/DGA-FSE/E21-17R
Financiación: info:eu-repo/grantAgreement/ES/MCI-AEI-FEDER/PGC2018-095328-B-I00
Financiación: info:eu-repo/grantAgreement/ES/MCIN/AEI/10.13039/501100011033

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Física Teórica (Dpto. Física Teórica)
Área (Departamento): Área Física Atóm.Molec.y Nucl. (Dpto. Física Teórica)