Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-03-19
JHEP 0908:078,2009
Physics
High Energy Physics
High Energy Physics - Theory
25 pages, 1 figure. Wrong file in previous replacement
Scientific paper
10.1088/1126-6708/2009/08/078
We study the thermodynamics and the small fluctuations of a linear dilaton black hole, in an S-dual version of the near-horizon limit of type IIB NS5 branes. The thermodynamical analysis shows that the black hole is in a Hagedorn phase, with marginal stability. The dynamical analysis confirms that the speed of sound of the dual theory vanishes and that there are no evident instabilities at the level of supergravity. We clarify the physical meaning of some singularities of the retarded correlator that were thought to lead to instabilities.
Bertoldi Gaetano
Hoyos-Badajoz Carlos
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