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arXiv · hep-ph/0510375

Pressure of the Standard Model at High Temperatures

A. Gynther·M. Vepsalainen
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Abstract

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.

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A. Gynther, M. Vepsalainen. 2005-12-15. Pressure of the Standard Model at High Temperatures. https://doi.org/10.1088/1126-6708%2F2006%2F01%2F060

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