On the Vafa-Witten Theorem on Spontaneous Breaking of Parity

Abstract

We revisit the proof provided by Vafa and Witten that there is no spontaneous parity breaking in theories with vector-like fermions. We argue that the various criticisms that have been leveled at the original proof do not invalidate it.

11 pages, no figures, requires revtex4; corrections concerning the applicability of the theorem to lattice models are included

References in corpus (1)

• Spontaneous Parity Violation in QCD At Finite Temperature: On the Inapplicability of the Vafa-Witten Theorem

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