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arXiv · hep-th/0505264

Hitchin Functionals in N=2 Supergravity

Mariana Grana·Jan Louis·Daniel Waldram
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Abstract

We consider type II string theory in space-time backgrounds which admit eight supercharges and can be characterized by the existence of an SU(3) x SU(3) structure. We show that the couplings of such backgrounds strongly resemble the couplings of four-dimensional N=2 supergravities and precisely coincide with the N=2 couplings after an appropriate Kaluza-Klein reduction. Specifically we show that the moduli space of metrics admits a special Kahler geometry with Kahler potentials given by the Hitchin functionals. Furthermore we explicitly compute the N=2 version of the superpotential from the transformation law of the gravitinos, and find its N=1 counterpart.

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Mariana Grana, Jan Louis, Daniel Waldram. 2006-01-18. Hitchin Functionals in N=2 Supergravity. https://doi.org/10.1088/1126-6708%2F2006%2F01%2F008

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