Winding number transitions at finite temperature in the Abelian-Higgs model

preprint2000arXivOpen access

Abstract

Following our earlier investigations we examine the quantum-classical winding number transition in the Abelian-Higgs system. It is demonstrated that the sphaleron transition in this system is of the smooth second order type in the full range of parameter space. Comparison of the action of classical vortices with that of the sphaleron supports our finding.

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