Vanishing condensates and anomalously light Goldstone modes in medium

Abstract

We show that in a uniform medium, the vanishing of a particular condensate along with spontaneously broken symmetry imply the existence of an anomalously light pseudo-Goldstone mode. The consequences for a vanishing chiral condensate in nuclear matter are discussed.

Comments: U. of Maryland preprint DOE-ER-40762-043, 13 pp, (RevTeX). -- More physics discussion added, in particular for the kaon condensation problem. Results unchanged