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Meta-stable supersymmetry breaking in a cooling universe

par Fischler, Willy;Kaplunovsky, Vadim;Mannelli, Lorenzo;Torres, Marcus;Chethan, Krishnan
Référence The journal of high energy physics (Online), 2007, 3, 107
Publication Publié, 2007-03

Article révisé par les pairs

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Résumé :

We look at the recently proposed idea that susy breaking can be accomplished in a meta-stable vacuum. In the context of one of the simplest models (the Seiberg-dual of super-QCD), we address the following question: if we look at this theory as it cools from high temperature, is it at all possible that we can end up in a susy-breaking meta-stable vacuum? To get an idea about the answer, we look at the free energy of the system at high temperature. We conclude that the phase-structure of the free-energy as the temperature drops, is indeed such that there is a second order phase transition in the direction of the non-susy vacuum at a finite T ≤ TcQ. On the other hand, the potential barrier in the direction of the susy vacuum is there all the way till T ∼ 0. © SISSA 2007.