Particle production from symmetry breaking after inflation and leptogenesis

被引：57

作者：

García-Bellido, J ^{[1
]}

Morales, ER ^{[1
]}

机构：

[1] CERN, Div Theory, CH-1211 Geneva 23, Switzerland

来源：

PHYSICS LETTERS B | 2002年 / 536卷 / 3-4期

关键词：

early Universe cosmology; particle production; dark matter; leptogenesis;

D O I：

10.1016/S0370-2693(02)01820-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recent studies suggest that the process of symmetry breaking after inflation typically occurs very fast, within a single oscillation of the symmetry-breaking field, due to the spinodal growth of its long-wave modes, otherwise known as 'tachyonic preheating'. We show how this sudden transition from the false to the true vacuum can induce a significant production of particles, bosons and fermions, coupled to the symmetry-breaking field. We find that this new mechanism of particle production in the early Universe may have interesting consequences for the origin of dark matter and the generation of the observed baryon asymmetry through leptogenesis. (C) 2002 Elsevier Science B.V All rights reserved.

引用

页码：193 / 202

页数：10

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