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The 2-Loop Effective Potential of the 3d SU(2)-Higgs Model in a General Covariant Gauge

M. Laine

hep-pharXiv:hep-ph/9406268

Abstract

To study the convergence of the loop expansion at the high-temperature electroweak phase transition, we calculate the 2-loop effective potential of the 3d SU(2)-Higgs model in a general covariant gauge. We find that the loop expansion definitely breaks down for large ξ, but converges rather well for smaller values, deep in the broken phase.

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