Gauging CSO groups in N=4 Supergravity
Mees de Roo, Dennis B. Westra, Sudhakar Panda
TL;DR
This paper explores specific gaugings in N=4 supergravity, finding a stable cosmological solution despite the absence of fully stable vacua, advancing understanding of supergravity models and their cosmological implications.
Contribution
It introduces a class of CSO-gaugings in N=4 supergravity and identifies a stable cosmological scaling solution, despite no fully stable vacua being found.
Findings
No stable vacuum against all scalar perturbations at the matter-free point.
Discovery of a stable cosmological scaling solution.
Insights into the stability properties of CSO-gaugings in supergravity.
Abstract
We investigate a class of CSO-gaugings of N=4 supergravity coupled to six vector multiplets. Using the CSO-gaugings we do not find a vacuum that is stable against all scalar perturbations at the point where the matter fields are turned off. However, at this point we do find a stable cosmological scaling solution.
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