Finite-temperature supersymmetry: the Wess-Zumino model |
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Authors: | Kai Kratzert |
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Institution: | Deutsches Elektronen-Synchrotron DESY, D-22603 Hamburg, Germany |
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Abstract: | We investigate the breakdown of supersymmetry at finite temperature. While it has been proven that temperature always breaks supersymmetry, the nature of this breaking is less clear. On the one hand, a study of the Ward-Takahashi identities suggests a spontaneous breakdown of supersymmetry without the existence of a Goldstino, while on the other hand it has been shown that in any supersymmetric plasma there should exist a massless fermionic collective excitation, the phonino. Aim of this work is to unify these two approaches. For the Wess-Zumino model, it is shown that the phonino exists and contributes to the supersymmetric Ward-Takahashi identities in the right way displaying that supersymmetry is broken spontaneously with the phonino as the Goldstone fermion. |
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Keywords: | Supersymmetry Finite temperature field theory |
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