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Universality of the superpotential for d = 4 extremal black holes

We provide a general strategy to obtain the superpotential W for both BPS and non-BPS extremal black holes in N=2 four dimensional supergravities based on symmetric spaces. This extends the construction of W in terms of U-duality invariants that was presented in previous work on the $t^3$ model. As...

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Detalles Bibliográficos
Autores principales: Ceresole, Anna, Dall'Agata, Gianguido, Ferrara, Sergio, Yeranyan, Armen
Formato: info:eu-repo/semantics/article
Lenguaje:eng
Publicado: Nucl. Phys. B 2009
Materias:
Acceso en línea:https://dx.doi.org/10.1016/j.nuclphysb.2010.02.015
http://cds.cern.ch/record/1212901
Descripción
Sumario:We provide a general strategy to obtain the superpotential W for both BPS and non-BPS extremal black holes in N=2 four dimensional supergravities based on symmetric spaces. This extends the construction of W in terms of U-duality invariants that was presented in previous work on the $t^3$ model. As an application, we explicitly provide W and the solutions to the related gradient flows for the $st^2$ and stu models. The procedure is shown to hold also for the full N=8 theory. The role of flat directions in moduli space is clarified.