Pressure of the standard model at high temperatures -: art. no. 060

被引：0

作者：

Gynther, A ^{[1
]}

Vepsäläinen, M ^{[1
]}

机构：

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

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2006年 / 01期

关键词：

standard model; thermal field theory;

D O I：

暂无

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We compute the pressure of the standard model at high temperatures in the symmetric phase to three loops, or to O(g(5)) in all coupling constants. We find that the terms of the perturbative expansion in the SU(2) + Higgs sector decrease monotonically with increasing order, but the large values of the strong coupling constant g(s) and the Yukawa coupling of the top quark g(Y) make the expansion in the full theory converge more slowly. The final result is observed to be about 10% smaller than the ideal gas pressure commonly used in cosmological calculations.

引用

页数：33

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