The Structure of a Quantized Vortex in a Bose-Einstein Condensate

Details The Structure of a Quantized Vortex in a Bose-Einstein Condensate The Structure of a Quantized Vortex in a Bose-Einstein Condensate

2000-05-26

arxiv.org/abs/cond-mat/0005470v2

J. Low Temp. Phys. 121, 285 (2000)

Physics

Condensed Matter

LaTeX (JLTP style), 6 pages, 2 EPS figures, Procceding of International Symposium on Quantum Fluids and Solids 2000

Scientific paper

10.1023/A:1017516706057

The structure of a quantized vortex in a Bose-Einstein Condensate is investigated using the projection method developed by Peierls, Yoccoz, and Thouless. This method was invented to describe the collective motion of a many-body system beyond the mean-field approximation. The quantum fluctuation has been properly built into the variational wave function, and a vortex is described by a linear combination of Feynman wave functions weighted by a Gaussian distribution in their positions. In contrast to the solution of the Gross-Pitaevskii equation, the particle density is finite at the vortex axis and the vorticity is distributed in the core region.

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