Leading-Order Actions of Goldstino Fields
arXiv:1005.0231 · doi:10.1140/epjc/s10052-011-1793-0
Abstract
This paper starts with a self-contained discussion of the so-called Akulov-Volkov action S_AV, which is traditionally taken to be the leading-order action of Goldstino field. Explicit expressions for S_AV and its chiral version S_AV^ch are presented. We then turn to the issue on how these actions are related to the leading-order action S_NL proposed in the newly proposed constrained superfield formalism. We show that S_NL may yield S_AV/S_AV^ch or a totally different action S_KS, depending on how the auxiliary field in the former is integrated out. However, S_KS and S_AV/S_AV^ch always yield the same S-matrix elements, as one would have expected from general considerations in quantum field theory.
Minor changes, version to appear in European Physical Journal C
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Cited by in corpus (15)
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- Recursion relations from soft theorems
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- Interactions of N Goldstini in Superspace
- Minimal Constrained Supergravity
- From Linear to Non-linear SUSY and Back Again
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- Minimal constrained superfields and the Fayet-Iliopoulos model
- Linear space of spinor monomials and realization of the Nambu-Goldstone fermion in the Volkov-Akulov and Komargodski-Seiberg Lagrangians
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