Phase structure and phase transitions of the SU(2) × O(N) symmetric scalar field theory

Research output: Contribution to journalArticle

Abstract

Radiatively induced SU(2) symmetry breaking is shown to be a genuine feature of SU(2)×O(N) globally symmetric renormalisable field theories in the large-N limit, describing interaction of a complex SU(2) doublet, O(N)-singlet field with an SU(2) singlet, O(N) vector. Symmetry-breaking solutions are found even when all fields have positive renormalised squared mass. The emerging novel mechanism of symmetry breaking can reproduce with a choice of N∼300 the standard range of the electroweak condensate and the Higgs mass occurring in the extended Higgs dynamics of an SU(2) symmetric Gauge+Higgs model.

Original languageEnglish
Article number51001
JournalEPL
Volume79
Issue number5
DOIs
Publication statusPublished - Sep 1 2007

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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