Cosmic ray threshold anomaly and kinematics in the dS spacetime

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dc.creatorChang, Zhe
dc.creatorChen, Shao-Xia
dc.creatorGuan, Cheng-Bo
dc.date2004-02-14
dc.date.accessioned2026-07-07T02:12:17Z
dc.date.available2026-07-07T02:12:17Z
dc.descriptionWe present a covariant framework of kinematics in the dS spacetime, which is a natural postulate of recent astronomical observations ($Λ>0)$. One-particle states are presented explicitly. It is noticed that the dispersion relation of free particles is dependent on the degrees of freedom of angular momentum and spin. This fact can be referred to as the effects of the cosmological constant on kinematics of particles. The kinematics in dS spacetime is used to investigate the phenomenon of ultra high energy cosmic rays. We emphasize the possibility of solving the threshold anomalies of the interactions between ultra high energy cosmic rays and soft photons in the covariant framework of kinematics in the dS spacetime.
dc.description16 pages, 5 figures, Latex file
dc.identifierhttps://arxiv.org/abs/astro-ph/0402351
dc.identifierhttp://arxiv.org/abs/astro-ph/0402351
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/7402
dc.subjectAstrophysics
dc.titleCosmic ray threshold anomaly and kinematics in the dS spacetime
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