N=2 Supersymmetry and de Sitter space

Details N=2 Supersymmetry and de Sitter space N=2 Supersymmetry and de Sitter space

2001-09-21

arxiv.org/abs/hep-th/0109168v3

Physics

High Energy Physics

High Energy Physics - Theory

24 pages, 5 figs, LaTeX, Improved version

Scientific paper

We present a (unique?) possibility of de Sitter solution in the framework of N=2 supersymmetry (hypersymmetry). We show that a model with a vector and a charged hypermultiplet has a hybrid inflation type potential. It leads to a slow-roll regime in de Sitter type background with all supersymmetries broken spontaneously. Beyond the bifurcation point the waterfall stage abruptly brings the system into a ground state with 2 unbroken supersymmetries. De Sitter stage exists under condition that the superconformal SU(2,2|2) symmetry of the model is softly broken down to N=2 supersymmetry by the vev of the Killing prepotential triplet P^r. This hybrid hypersymmetry model may describe P-term inflation and/or acceleration of the universe at the present epoch.

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