Photon absorption in a doubly special relativity model with undeformed free propagation and total momentum conservation

Carmona, J. M. (Universidad de Zaragoza) ; Cortés, J. L. ; Rescic, F. ; Reyes, M. A. (Universidad de Zaragoza) ; Terzic, T.

Resumen: The lack of a dynamical framework within doubly special relativity theories has impeded the development of a corresponding phenomenology of modified interactions. In this work we show that in a model based on the classical basis of κ-Poincaré and total momentum conservation, one has a well-defined cross section of the photon-photon annihilation process, once a prescription for the channel treatment is set. The modification of the interaction can lead to observable effects in the opacity of the Universe to very high-energy gamma rays when the gamma-ray energy approaches the energy scale of the deformation. The magnitude and observability of this deformation are examined as functions of the gamma-ray energy and source distance.

Idioma: Inglés

DOI: 10.1088/1475-7516/2025/07/066

Año: 2025

Publicado en: Journal of Cosmology and Astroparticle Physics 2025, 07 (2025), 066
ISSN: 1475-7516

Financiación: info:eu-repo/grantAgreement/ES/AEI/PID2021-126078NB-C21
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/E21-23R

Tipo y forma: Article (Published version)

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