Published May 15, 2005 | Version v1
Journal article Metadata-only

Cosmic ray threshold in an asymptotically de Sitter spacetime

Creators

  • 1. Institute of High Energy Physics, Chinese Academy of Sciences, P.O. Box 918(4), 100049 Beijing (China)
  • 2. Interdisciplinary Center for Theoretical Study, University of Science and Technology of China, 230026 Hefei (China)

Description

We discuss the threshold anomaly in ultrahigh energy cosmic ray physics by assuming that the matter world just be a perturbation of a de Sitter universe, which is consistent with the recent astronomical observations: about two-thirds of the whole energy in the Universe is contributed by a small positive cosmological constant. 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. This fact can be regarded as the effects of the cosmological constant on kinematics of particles

Additional details

Identifiers

DOI
10.1103/PhysRevD.71.103007;
arXiv
arXiv:astro-ph/0505612v1;

Publishing Information

Journal Title
Physical Review. D, Particles Fields
Journal Volume
71
Journal Issue
10
Journal Page Range
p. 103007-103007.8
ISSN
0556-2821
CODEN
PRVDAQ

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
37023596
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
ANGULAR MOMENTUM; COSMIC RAY PROPAGATION; COSMOLOGICAL CONSTANT; COSMOLOGY; DE SITTER GROUP; DEGREES OF FREEDOM; DISPERSION RELATIONS; DISTURBANCES; SPACE-TIME; UNIVERSE
Descriptors DEC
LIE GROUPS; SYMMETRY GROUPS

Optional Information

Notes
(c) 2005 The American Physical Society