Extremal Black Holes in Supergravity and the Bekenstein-Hawking Entropy

Entropy

L. Andrianopoli¹ 

[1] Dipartimento di Fisica, Politecnico di Torino, Corso Duca degli Abruzzi 24, I-10129 Torino and Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Torino, Italy

关键词: supergravity;    black holes;    BPS states;    central charges;   

DOI  :  10.3390/e4030065

来源: mdpi

【 摘 要 】

We review some results on the connection among supergravity central charges, BPS states and Bekenstein-Hawking entropy. In particular, N = 2 super-gravity in four dimensions is studied in detail. For higher N supergravities we just give an account of the general theory specializing the discussion to the N = 8 case when one half of supersymmetry is preserved. We stress the fact that for extremal supergravity black holes the entropy formula is topological, that is the entropy turns out to be a moduli independent quantity and can be written in terms of invariants of the duality group of the supergravity theory.

【 授权许可】

CC BY   
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.