1998/08/06 by George V. Vlasov, G. V. Vlasov, Vlasov, G. V.
Earth and Planetary Sciences · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-pressure geophysics and materials #Pulsars and Gravitational Waves Research #Quantum, superfluid, helium dynamics #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9808250
14 pages, Latex, 1 table; broadn. abstr. in rev. vers
openalex publication_date 1998/08/06 · arxiv created 1999/05/06 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We consider the discontinuities in a two-constituent relativistic superfluid. In the acoustic limit they degenerate into the first and second sound which are independent up to the second-order linear approximation. Inclusion of the quadratic deviations relates to the small-amplitude shock. Particularly we consider a plane shock at low temperature when the phonon excitations contribute to the normal constituent. So we found the generalization of the temperature increment and acoustic wave velocity in relativistic superfluid. The fourth sound speed is also calculated.