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arXiv · 0906.4810

Sound modes in holographic superfluids

Christopher P. Herzog·Amos Yarom
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Abstract

Superfluids support many different types of sound waves. We investigate the relation between the sound waves in a relativistic and a non-relativistic superfluid by using hydrodynamics to calculate the various sound speeds. Then, using a particular holographic scalar gravity realization of a strongly interacting superfluid, we compute first, second and fourth sound speeds as a function of the temperature. The relativistic low temperature results for second sound differ from Landau's well known prediction for the non-relativistic, incompressible case.

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Christopher P. Herzog, Amos Yarom. 2009-06-26. Sound modes in holographic superfluids. https://doi.org/10.1103/physrevd.80.106002

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