Abstract
Superfluids support many different types of sound waves. We investigate the relation between the sound waves in a relativistic and a nonrelativistic 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 nonrelativistic, incompressible case.
| Original language | English |
|---|---|
| Article number | 106002 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 80 |
| Issue number | 10 |
| DOIs | |
| State | Published - 12 Nov 2009 |
| Externally published | Yes |
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)
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