TY  - JOUR
AU  - Galli, P.
AU  - Ortin, T.
AU  - Perz, J.
AU  - Shahbazi, C. S.
PY  - 2011
DA  - 2011//
TI  - Non-extremal black holes of N=2, d=4 supergravity
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 041
VL  - 07
IS  - 7
AB  - We propose a generic recipe for deforming extremal black holes into nonextremal black holes and we use it to find and study the static non-extremal black-hole solutions of several N = 2, d = 4 supergravity models (SL(2, R)/U(1), (CP) over bar (n) and STU with four charges). In all the cases considered, the non-extremal family of solutions smoothly interpolates between all the different extremal limits, supersymmetric and not supersymmetric. This fact can be used to explicitly find extremal non-supersymmetric solutions also in the cases in which the attractor mechanism does not completely fix the values of the scalars on the event horizon and they still depend on the boundary conditions at spatial infinity. We compare (supersymmetry) Bogomol'nyi bounds with extremality bounds, we find the first-order flow equations for the non-extremal solutions and the corresponding superpotential, which gives in the different extremal limits different superpotentials for extremal black holes. We also compute the entropies (areas) of the inner (Cauchy) and outer (event) horizons, finding in all cases that their product gives the square of the moduli-independent entropy of the extremal solution with the same electric and magnetic charges.
SN  - 1126-6708
UR  - http://arxiv.org/abs/1105.3311
UR  - https://doi.org/10.1007/JHEP07(2011)041
DO  - 10.1007/JHEP07(2011)041
N1  - WOS:000293741400041
ID  - Galli_etal2011
ER  -