Supersymmetry and Broken Symmetries at High Temperature

Abstract

It is generally believed that internal symmetries are necessarily restored at high temperature in supersymmetric theories. We provide simple and natural counterexamples to this no-go theorem for systems having a net background charge. We exemplify our findings on abelian models, for both cases of global and local symmetries and discuss their possible implications.

Comments: Four pages, LaTeX file; a couple of refs. added. Final version accepted for publication in Phys. Rev. Lett