Black holes with primary hair in gauged N=8 supergravity
Anabalon
A
author
Canfora
F
author
Giacomini
A
author
Oliva
J
author
2012
English
In this paper, we analyze the static solutions for the U(1)(4) consistent truncation of the maximally supersymmetric gauged supergravity in four dimensions. Using a new parametrization of the known solutions it is shown that for fixed charges there exist three Possible black hole configurations according to the pattern of symmetry breaking of the (scalars sector of the) Lagrangian. Namely a black hole without scalar fields, a black hole with a primary hair and a black hole with a secondary hair respectively. This is the first, exact, example of a black hole with a primary scalar hair, where both the black hole and the scalar fields are regular on and outside the horizon. The configurations with secondary and primary hair can be interpreted as a spontaneous symmetry breaking of discrete permutation and reflection symmetries of the action. It is shown that there exist a triple point in the thermodynamic phase space where the three solution coexist. The corresponding phase transitions are discussed and the free energies are written explicitly as function of the thermodynamic coordinates in the uncharged case. In the charged case the free energies of the primary hair and the hairless black hole are also given as functions of the thermodynamic coordinates.
Black Holes
Supergravity Models
WOS:000306416500011
exported from refbase (show.php?record=233), last updated on Fri, 19 Jun 2015 10:02:06 -0300
text
files/215_Anabalon_etal2012.pdf
10.1007/JHEP06(2012)010
Anabalon_etal2012
Journal Of High Energy Physics
J. High Energy Phys.
2012
Springer
continuing
periodical
academic journal
6
12 pp
1029-8479