Weinberg-Salam model at finite temperature and density

Details Weinberg-Salam model at finite temperature and density Weinberg-Salam model at finite temperature and density

2004-12-27

arxiv.org/abs/hep-ph/0412392v3

Phys.Lett. B617 (2005) 87-91

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, no figures. New references added. Typo corrected

Scientific paper

10.1016/j.physletb.2005.05.010

We present a new gauge fixing condition for the Weinberg-Salam electro-weak theory at finite temperature and density. After spontaneous symmetry breaking occurs, every unphysical term in the Lagrangian is eliminated with our gauge fixing condition. A new and simple Lagrangian can be obtained where we can identify the propagators and vertices. Some consequences are discussed, as the new gauge dependent masses of the gauge fields and the new Faddeev-Popov Lagrangian. After obtaining the quadratic terms, we calculate exactly the 1-loop effective potential identifying the contribution of every particular field.

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