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arXiv · 1511.03024

Brane induced supersymmetry breaking and de Sitter supergravity

Igor Bandos·Luca Martucci·Dmitri Sorokin·Mario Tonin
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Abstract

We obtain a four-dimensional supergravity with spontaneously broken supersymmetry allowing for de Sitter vacua by coupling a superspace action of minimal N=1, D=4 supergravity to a locally supersymmetric generalization of the Volkov-Akulov goldstino action describing the dynamics of a space-filling non-BPS 3-brane in N=1, D=4 superspace. To the quadratic order in the goldstino field the obtained action coincides with earlier constructions of supergravities with nilpotent superfields, while matching the higher-order contributions will require a non-linear redefinition of fields. In the unitary gauge, in which the goldstino field is set to zero, the action coincides with that of Volkov and Soroka. We also show how a nilpotency constraint on a chiral curvature superfield emerges in this formulation.

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Igor Bandos, Luca Martucci, Dmitri Sorokin, Mario Tonin. 2016-02-07. Brane induced supersymmetry breaking and de Sitter supergravity. https://doi.org/10.1007/jhep02(2016)080

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