We report on some general results on the physics of extremal BPS black holes in four and five dimensions. The duality-invariant entropy-formula for all N > 2 extended supergravities is derived. Its relation with the fixed-scalar condition for the black-hole “potential energy” wich extremizes the BPS mass is obtained. BPS black holes preserving different fractions of supersymmetry are classified in a U-duality invariant set up. The latter deals with different orbits of the fundamental representations of the exceptional groups E7(7) and E6(6). We comment upon the interpretation of these results in a string and M-theory framework.

Duality, central charges and entropy of extremal BPS black holes / Andrianopoli, Laura Maria; D'Auria, Riccardo; S., Ferrara. - In: NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS. - ISSN 0920-5632. - 68:(1998), pp. 185-196. ((Intervento presentato al convegno Strings '97 tenutosi a Amsterdam (NLD) nel 16–21 June 1997 [10.1016/S0920-5632(98)00152-2].

Duality, central charges and entropy of extremal BPS black holes

ANDRIANOPOLI, Laura Maria;D'AURIA, RICCARDO;
1998

Abstract

We report on some general results on the physics of extremal BPS black holes in four and five dimensions. The duality-invariant entropy-formula for all N > 2 extended supergravities is derived. Its relation with the fixed-scalar condition for the black-hole “potential energy” wich extremizes the BPS mass is obtained. BPS black holes preserving different fractions of supersymmetry are classified in a U-duality invariant set up. The latter deals with different orbits of the fundamental representations of the exceptional groups E7(7) and E6(6). We comment upon the interpretation of these results in a string and M-theory framework.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11583/1637788
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