Universality of the superpotential for d = 4 extremal black holesReportar como inadecuado



 Universality of the superpotential for d = 4 extremal black holes


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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.



Autor: Anna Ceresole; Gianguido Dall'Agata; Sergio Ferrara; Armen Yeranyan

Fuente: https://archive.org/







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