Vortex in a weakly relativistic Bose gas at zero temperature and relativistic fluid approximation
نویسنده
چکیده
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. PACS: 98.80.Cq, 47.75.+f, 03.75.Fi
منابع مشابه
Vortex in a relativistic Bose-Eintein condensate and the relativistic Gross-Pitaevskii equation
By the Bogoliubov prescription and the method of Gross and Pitaevskii in quantum field theory, the relativistic almost ideal Bose-Eintein gas at zero temperature is discussed. Special attention is given to the study of a vortex in the gas. The field description and fluid approximation are compared. PACS: 11.10.-z, 05.30.Jp, 47.75.+f, 47.37.+q
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