Spontaneous R-Symmetry Breaking in O’Raifeartaigh Models
نویسنده
چکیده
We study the question of whether spontaneous U(1)R breaking can occur in O’Raifeartaightype models of spontaneous supersymmetry breaking. We show that in order for it to occur, there must be a field in the theory with R-charge different from 0 or 2. We construct the simplest O’Raifeartaigh model with this property, and we find that for a wide range of parameters, it has a meta-stable vacuum where U(1)R is spontaneously broken. This suggests that spontaneous U(1)R breaking actually occurs in generic O’Raifeartaigh models.
منابع مشابه
O’Raifeartaigh models with spontaneous R-symmetry breaking
O’Raifeartaigh models with general R-charge assignments can have vacua where both supersymmetry and R-symmetry are spontaneously broken. Most of these vacua are metastable because the potential shows a runaway behaviour. We explain the relation between runaway directions and R-symmetry. PACS. 11.30.Qc -12.60.Jv
متن کاملTree level Spontaneous R-symmetry breaking in O’Raifeartaigh models
We show that in O’Raifeartaigh models of spontaneous supersymmetry breaking, R-symmetries can be broken by non-zero values of fields at tree level, rather than by vacuum expectation values of pseudomoduli at loop level. As a complement of the recent result by Shih, we show that there must be a field in the theory with R-charge different from zero and two in order for R-symmetry breaking to occu...
متن کاملR-symmetry breaking, runaway directions and global symmetries in O’Raifeartaigh models
We discuss O’Raifeartaigh models with general R-charge assignments, introduced by Shih to break R-symmetry spontaneously. We argue that most of these models have runaway directions related to the R-symmetry. In addition, we study the simplest model with a U(N) global symmetry and show that in a range of parameters Rsymmetry is spontaneously broken in a metastable vacuum.
متن کاملTwo Loop R - Symmetry Breaking
We analyze two loop quantum corrections for pseudomoduli in O’Raifeartaigh like models. We argue that R-symmetry can be spontaneously broken at two loop in non supersymmetric vacua. We provide a basic example with this property. We discuss on phenomenological applications.
متن کاملExplicit R-Symmetry Breaking and Metastable Vacua
We consider O’Raifeartaigh-like models with explicit R-symmetry breaking and analyze the vacuum landscape. Taking such models as candidates for the hidden sector, we analyze the gauge mediation of the supersymmetry breaking, focusing on the effects produced by R-symmetry breaking. First, we construct families of non-R-symmetric models containing only singlet chiral superfields, and determine th...
متن کامل