Ultrabaric relativistic superfluids

Details Ultrabaric relativistic superfluids Ultrabaric relativistic superfluids

Sep 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985nciml..44...83p&link_type=abstract

Nuovo Cimento, Lettere, Serie 2, vol. 44, Sept. 16, 1985, p. 83-87. NSERC-supported research.

Astronomy and Astrophysics

Astrophysics

5

Astrophysics, Cosmology, High Pressure, Relativistic Plasmas, Superfluidity, Acoustic Velocity, Einstein Equations, Equations Of State, Relativistic Velocity, Schwarzschild Metric, Space-Time Functions

Scientific paper

Ultrabaric superfluid solutions are obtained for Einstein's equations to examine the possibility of the existence of superluminal sound speeds. The discussion is restricted only by requiring the energy-momentum tensor and the equation of state of matter to be represented by full relativistic equations. Only a few universes are known to satisfy the conditions, and those exhibit tension and are inflationary. Superluminal sound velocities are shown, therefore, to be possible for the interior Schwarzchild metric, which has been used to explain the red shift of quasars, and the Stephiani solution (1967). The latter indicates repeated transitions between superluminal and subliminal sound velocities in the hyperbaric superfluid of the early universe.

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