THERMALIZATION IN THE EARLY UNIVERSE-Reference-Cited by-同舟云学术

THERMALIZATION IN THE EARLY UNIVERSE

Published:1990-09-30 Issue:24 Volume:05 Page:1919-1925
ISSN:0217-7323
Container-title:Modern Physics Letters A
language:en
Short-container-title:Mod. Phys. Lett. A

Author:

ENQVIST K.¹,ESKOLA K. J.²

Affiliation:

1. Research Institute for Theoretical Physics, University of Helsinki, Siltavuorenpenger 20C, SF-00170 Helsinki 17, Finland

2. Department of Theoretical Physics, University of Helsinki, Finland

Abstract

We consider the rate of relaxation of an initially non-equilibrium momentum distribution towards thermal equilibrium. Numerical simulation shows that kinetic equilibrium will be reached after a few collisions. Chemical equilibrium will typically be established only much later. We find the equilibrium temperatures for the decay products of unstable particles and for initially cold Universe. In the latter case the highest equilibrium temperature in the Universe is found to be 1.2 × 1012 GeV .

Publisher

World Scientific Pub Co Pte Lt

Subject

General Physics and Astronomy,Astronomy and Astrophysics,Nuclear and High Energy Physics

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0217732390002171

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