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The 3d Effective Field Theory for Finite Temperature Scalar Electrodynamics

Jens O. Andersen

hep-pharXiv:hep-ph/9709418

Abstract

The effective field theory approach to high temperature field theory can be used to study the phase transition in theories with spontaneously broken symmetry. I construct a sequence of two effective three--dimensional field theories which are valid on successively longer distance scales for a specific model: N charged scalars coupled to a U(1) gauge field. The resulting effective Lagrangian can be used to investigate the phase transition, in particular the order of the phase transition as a function of N, using lattice simulations.

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