Quantum Monte Carlo Calculations for a large number of bosons in a harmonic trap

Details Quantum Monte Carlo Calculations for a large number of bosons in a harmonic trap Quantum Monte Carlo Calculations for a large number of bosons in a harmonic trap

1996-12-19

arxiv.org/abs/cond-mat/9612176v1

Phys. Rev. Lett. 77, 3695 (1996)

Physics

Condensed Matter

Statistical Mechanics

8 pages, 3 figures, Revtex

Scientific paper

10.1103/PhysRevLett.77.3695

In this paper, I present a precise Quantum Monte Carlo calculation at finite temperature for a very large number (many thousands) of bosons in a harmonic trap, which may be anisotropic. The calculation applies directly to the recent experiments of Bose-Einstein condensation of atomic vapors in magnetic traps. I show that the critical temperature of the system decreases with the interaction. I also present profiles for the overall density and the one of condensed particles, and obtain excellent agreement with solutions of the Gross-Pitaevskii equation.

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