Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2002-04-04
JHEP 0205 (2002) 032
Physics
High Energy Physics
High Energy Physics - Theory
latex, 68 pages, 4 figures. v2: Typos fixed, argument about \chi corrected in sec. 7.4, discussion of space of physical soluti
Scientific paper
10.1088/1126-6708/2002/05/032
We take steps toward constructing explicit solutions that describe non-extremal charged dilatonic branes of string/M-theory with a transverse circle. Using a new coordinate system we find an ansatz for the solutions with only one unknown function. We show that this function is independent of the charge and our ansatz can therefore also be used to construct neutral black holes on cylinders and near-extremal charged dilatonic branes with a transverse circle. For sufficiently large mass $M > M_c$ these solutions have a horizon that connects across the cylinder but they are not translationally invariant along the circle direction. We argue that the neutral solution has larger entropy than the neutral black string for any given mass. This means that for $M > M_c$ the neutral black string can gain entropy by redistributing its mass to a solution that breaks translational invariance along the circle, despite the fact that it is classically stable. We furthermore explain how our construction can be used to study the thermodynamics of Little String Theory.
Harmark Troels
Obers Niels
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