Temperature dependence of the energy of a vortex in a two-dimensional Bose gas

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We evaluate the thermodynamic critical angular velocity Omega_c(T) for creation of a vortex of lowest quantized angular momentum in a strictly two-dimensional Bose gas at temperature T, using a mean-field two-fluid model for the condensate and the thermal cloud. Our results show that (i) a Thomas-Fermi description of the condensate badly fails in predicting the particle density profiles and the energy of the vortex as functions of T; and (ii) an extrapolation of a simple Thomas-Fermi formula for Omega_c(0) is nevertheless approximately useful up to T = 0.5 T_c.
9 pages, 4 figures

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Other Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/24736

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0408652
 http://arxiv.org/abs/cond-mat/0408652
 Phys. Lett. A 328 (2004) 500
 doi:10.1016/j.physleta.2004.06.068

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arXiv