Supersymmetry breaking on orbifolds from Wilson lines
G.v.Gersdorff, M.Quiros
TL;DR
This paper demonstrates the equivalence of supersymmetry breaking via Wilson lines and Scherk-Schwarz mechanisms in five-dimensional orbifold theories, revealing insights into the super-Higgs mechanism and global supersymmetry in the flat limit.
Contribution
It proves the equivalence of Wilson line and Scherk-Schwarz supersymmetry breaking mechanisms in 5D orbifold models, clarifying their relation through the super-Higgs mechanism.
Findings
Wilson line breaking triggered by SU(2)_R symmetry
Super-Higgs mechanism absorbs Goldstinos into gravitinos
Supersymmetry breaking persists in the flat limit, leading to softly broken global supersymmetry
Abstract
We consider five dimensional theories compactified on the orbifold S^1/Z_2 and prove that spontaneous local supersymmetry breaking by Wilson lines and by the Scherk-Schwarz mechanism are equivalent. Wilson breaking is triggered by the SU(2)_R symmetry which is gauged in off-shell N=2 supergravity by auxiliary fields. The super-Higgs mechanism disposes of the would-be Goldstinos which are absorbed by the gravitinos to become massive. The breaking survives in the flat limit, where we decouple all gravitational interactions, and the theory becomes softly broken global supersymmetry.
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