CERN Accelerating science

Article
Report number	astro-ph/0207572
Title	Trans-Planckian Particle Creation in Cosmology and Ultra-High Energy Cosmic Rays
Related title	TRANSPLANCKIAN ULTRAHIGH-ENERGY COSMIC-RAYS
Author(s)	Starobinsky, Alexei A. (Landau Inst.) ; Tkachev, Igor I. (CERN)
Affiliation	(Landau Inst. Thor. Phys. Moscow) ; (CERN)
Publication	2002
Imprint	26 Jul 2002
Number of pages	5
Note	Typos are corrected
In:	JETP Lett. 76 (2002) 235-239
DOI	10.1134/1.1520612
Subject category	Astrophysics and Astronomy
Abstract	We consider observational constraints on creation of particles induced by hypothetical trans-Planckian effects during the current stage of the Universe expansion. We show that compatibility with the diffuse gamma-ray background measured by the EGRET experiment strongly restricts this creation. In particular, it rules out the possibility to detect signatures of such short distance effects in anisotropies of the cosmic microwave background radiation. On the other hand, a possibility that some part of the ultra-high energy cosmic rays originates from new trans-Planckian physics remains open.

Corresponding record in: Inspire
Email contact: [email protected]