Trans-Planckian Particle Creation in Cosmology and Ultra-High Energy Cosmic Rays

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 pa...

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Detalles Bibliográficos
Autores principales: Starobinsky, Alexei A., Tkachev, Igor I.
Lenguaje:eng
Publicado: 2002
Materias:
Astrophysics and Astronomy
Acceso en línea:https://dx.doi.org/10.1134/1.1520612
http://cds.cern.ch/record/573573
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author Starobinsky, Alexei A.
Tkachev, Igor I.
author_facet Starobinsky, Alexei A.
Tkachev, Igor I.
author_sort Starobinsky, Alexei A.
collection CERN
description 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.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2002
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spelling cern-5735732023-03-14T17:04:30Zdoi:10.1134/1.1520612http://cds.cern.ch/record/573573engStarobinsky, Alexei A.Tkachev, Igor I.Trans-Planckian Particle Creation in Cosmology and Ultra-High Energy Cosmic RaysAstrophysics and AstronomyWe 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.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.astro-ph/0207572oai:cds.cern.ch:5735732002-07-26
spellingShingle Astrophysics and Astronomy
Starobinsky, Alexei A.
Tkachev, Igor I.
Trans-Planckian Particle Creation in Cosmology and Ultra-High Energy Cosmic Rays
title Trans-Planckian Particle Creation in Cosmology and Ultra-High Energy Cosmic Rays
title_full Trans-Planckian Particle Creation in Cosmology and Ultra-High Energy Cosmic Rays
title_fullStr Trans-Planckian Particle Creation in Cosmology and Ultra-High Energy Cosmic Rays
title_full_unstemmed Trans-Planckian Particle Creation in Cosmology and Ultra-High Energy Cosmic Rays
title_short Trans-Planckian Particle Creation in Cosmology and Ultra-High Energy Cosmic Rays
title_sort trans-planckian particle creation in cosmology and ultra-high energy cosmic rays
topic Astrophysics and Astronomy
url https://dx.doi.org/10.1134/1.1520612
http://cds.cern.ch/record/573573
work_keys_str_mv AT starobinskyalexeia transplanckianparticlecreationincosmologyandultrahighenergycosmicrays
AT tkachevigori transplanckianparticlecreationincosmologyandultrahighenergycosmicrays

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