Dynamical manifestation of the Goldstone phenomenon at 1-loop

Sz Borsányi, A. Patkós, Zs Szép

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We have calculated the damping rate Γ(|k|) for classical on-shell Goldstone modes of the Ο(2) symmetric scalar fields propagating in a thermal medium of the broken symmetry phase taking into account the effect of the explicit symmetry breaking. The result of the one-loop analysis can be expanded around Γ(0), which depends non-analytically on the parameter of the explicit symmetry breaking, h. Γ(0) vanishes when h → 0, demonstrating in this way the absence of the restoring force, when the equilibrium direction of the symmetry breaking is modulated homogeneously.

Original languageEnglish
Pages (from-to)188-192
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume469
Issue number1-4
DOIs
Publication statusPublished - Jan 1 1999

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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