Vortex in a weakly relativistic Bose gas at zero temperature and relativistic fluid approximation

Details Vortex in a weakly relativistic Bose gas at zero temperature and relativistic fluid approximation Vortex in a weakly relativistic Bose gas at zero temperature and relativistic fluid approximation

2002-10-10

arxiv.org/abs/gr-qc/0210033v3

J.Phys.A37:7923-7938,2004

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

20 pages

Scientific paper

10.1088/0305-4470/37/32/007

The Bogoliubov procedure in quantum field theory is used to describe a relativistic almost ideal Bose gas at zero temperature. Special attention is given to the study of a vortex. The radius of the vortex in the field description is compared to that obtained in the relativistic fluid approximation. The Kelvin waves are studied and, for long wavelengths, the dispersion relation is obtained by an asymptotic matching method and compared with the non relativistic result.

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