Sound waves in strongly coupled non-conformal gauge theory plasma

DOI10.1016/J.NUCLPHYSB.2005.11.005zbMATH Open1192.81316arXivhep-th/0507026OpenAlexW1988671945MaRDI QIDQ877319

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Publication date: 20 April 2007

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Abstract: Using gauge theory/gravity duality we study sound wave propagation in strongly coupled non-conformal gauge theory plasma. We compute the speed of sound and the bulk viscosity of N=2^* supersymmetric SU(N_c) Yang-Mills plasma at a temperature much larger than the mass scale of the theory in the limit of large N_c and large 't Hooft coupling. The speed of sound is computed both from the equation of state and the hydrodynamic pole in the stress-energy tensor two-point correlation function. Both computations lead to the same result. Bulk viscosity is determined by computing the attenuation constant of the sound wave mode.

Full work available at URL: https://arxiv.org/abs/hep-th/0507026

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