GUT baryogenesis after preheating: numerical study of the production and decay of X-bosons

被引：85

作者：

Kolb, EW ^{[1
]}

Riotto, A

Tkachev, II

机构：

[1] NASA, Fermi Natl Accelerator Lab, Fermilab Astrophys Ctr, Batavia, IL 60510 USA

[2] Univ Chicago, Dept Astron & Astrophys, Enrico Fermi Inst, Chicago, IL 60637 USA

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

[4] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA

[5] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia

来源：

PHYSICS LETTERS B | 1998年 / 423卷 / 3-4期

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

D O I：

10.1016/S0370-2693(98)00134-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We perform a fully non-linear calculation of the production of supermassive Grand Unified Theory (GUT) X bosons during preheating, taking into account the fact that they are unstable with a decay width Gamma(X). We show that parametric resonance does not develop if Gamma(X) is larger than about 10(-2)m(X). We compute the nonthermal number density of superheavy bosons produced in the preheating phase and demonstrate that the observed baryon asymmetry may be explained by GUT baryogenesis after preheating if Gamma(X) is smaller than about 10(-3)m(X). (C) 1998 Published by Elsevier Science B.V.

引用

页码：348 / 354

页数：7

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