Bulk viscosity of N=2* plasma

Details Bulk viscosity of N=2* plasma Bulk viscosity of N=2* plasma

2008-12-18

arxiv.org/abs/0812.3623v2

Nucl.Phys.B816:62-72,2009

Physics

High Energy Physics

High Energy Physics - Theory

16 pages, 3 figures; v2: NPB version

Scientific paper

10.1016/j.nuclphysb.2009.02.022

We use gauge theory/string theory correspondence to study the bulk viscosity of strongly coupled, mass deformed SU(N_c) N=4 supersymmetric Yang-Mills plasma, also known as N=2^* gauge theory. For a wide range of masses we confirm the bulk viscosity bound proposed in arXiv:0708.3459. For a certain choice of masses, the theory undergoes a phase transition with divergent specific heat c_V ~ |1-T_c/T|^(-1/2). We show that, although bulk viscosity rapidly grows as T -> T_c, it remains finite in the vicinity of the critical point.

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