Proximal chiral phase transition

Joseph I. Kapusta, Ajit M. Srivastava

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

We consider the form of the chiral-symmetry-breaking piece of the effective potential in the linear σ model. Surprisingly, it allows for a second local minimum at both zero and finite temperatures. Even though chiral symmetry is not exact, and therefore is not restored in a true phase transition at finite temperature, this second minimum can nevertheless mimic many of the effects of a first-order phase transition. We derive a lower limit on the height of the second minimum relative to the global minimum based on cosmological considerations; this limit is so weak as to be practically nonexistent. In high energy nuclear collisions, it may lead to observable effects in Bose-Einstein interferometry due to domain walls and to coherent pion emission.

Original languageEnglish (US)
Pages (from-to)5379-5388
Number of pages10
JournalPhysical Review D
Volume50
Issue number8
DOIs
StatePublished - 1994

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