Flat direction condensate instabilities in the MSSM

被引：54

作者：

Enqvist, K

Jokinen, A

McDonald, J

机构：

[1] Univ Helsinki, Dept Phys, FIN-00014 Helsinki, Finland

[2] Univ Helsinki, Inst Phys, FIN-00014 Helsinki, Finland

[3] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland

来源：

PHYSICS LETTERS B | 2000年 / 483卷 / 1-3期

基金：

芬兰科学院;

关键词：

D O I：

10.1016/S0370-2693(00)00578-5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Coherently oscillating scalar condensates formed along flat directions of the MSSM scalar potential are unstable with respect to spatial perturbations if the potential is flatter than phi(2), resulting in the formation of non-topological solitons such as Q-balls, Using the renormalization group we calculate the corrections to the phi(2) potential for a range of flat directions and show that unstable condensates are a generic feature of the MSSM. Exceptions arise for an experimentally testable range of stop and gluino masses when there are large admixtures of stops in the flat direction scalar. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：191 / 195

页数：5

共 12 条

[1] A NEW MECHANISM FOR BARYOGENESIS [J].