Hybrid Inflation, Dark Energy And Dark Matter
Qaisar Shafi, Arunansu Sil, Siew-Phang Ng
Abstract
It has been suggested that the dark energy density ρv ~ 10-12 eV4 in the universe is associated with a metastable (false) vacuum, while the true vacuum has a vanishing cosmological constant. By including supergravity corrections we show how this is naturally realized in realistic supersymmetric hybrid inflation models. With a fundamental supersymmetry breaking scale ~ TeV, the LSP is not a suitable candidate for cold dark matter. We consider axion physics to overcome this and simultaneously provide a resolution of the MSSM μproblem.
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