Sound modes in holographic superfluids
High Energy Physics - Theory
2013-05-29 v1
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.
Keywords
Cite
@article{arxiv.0906.4810,
title = {Sound modes in holographic superfluids},
author = {Christopher P. Herzog and Amos Yarom},
journal= {arXiv preprint arXiv:0906.4810},
year = {2013}
}
Comments
22 pages, 7 figures