| Issue |
EPL
Volume 89, Number 5, March 2010
|
|
|---|---|---|
| Article Number | 54001 | |
| Number of page(s) | 5 | |
| Section | Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics | |
| DOI | https://doi.org/10.1209/0295-5075/89/54001 | |
| Published online | 23 March 2010 | |
Discontinuity waves in a relativistic superfluid
Department of Mathematics, University of Messina - Viale Ferdinando Stagno d'Alcontres, 31, 98166 Messina, Italy, EU
Corresponding author: vlarosa@unime.it
Received:
27
January
2010
Accepted:
18
February
2010
We consider a two-constituent model of a relativistic superfluid. Making use of the singular surface theory, we find the velocities of first and second sounds, due only to the particle number density current n and the entropy current s, respectively. Applying the second-order compatibility conditions, we are able to determine the discontinuities associated to the two waves and the transport equations for the amplitude of the discontinuities. Finally, plane, cylindrical and spherical waves are also investigated.
PACS: 47.75.+f – Relativistic fluid dynamics / 47.37.+q – Hydrodynamic aspects of superfluidity; quantum fluids / 42.65.Tg – Optical solitons; nonlinear guided waves
© EPLA, 2010
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