BULK VISCOSITY IN THE EARLY UNIVERSE

被引：19
作者：
CHENG, BL
机构：
[1] Department of Astronomy, University of Illinois at Urbana-Champaign, Urbana, IL 61801, 1002 West Green Street
来源：
PHYSICS LETTERS A | 1991年 / 160卷 / 04期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0375-9601(91)90660-Z
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this paper, the coefficient of bulk viscosity during the GUT phase transition is derived. Its effects on cosmological inflation, density fluctuations, and entropy production are also investigated. We identify conditions for which bulk viscosity can become an inflationary source as well as generate an inflation. An appropriate fluctuation spectrum caused by bulk viscosity for galaxy formation is obtained. Also, the entropy production by bulk viscosity is calculated and the result provides us a possible resolution to the entropy generation problem.
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页码：329 / 338
页数：10
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