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.
ASJC Scopus subject areas
- Physics and Astronomy(all)