Comment on: rotational properties of trapped bosons

Details Comment on: rotational properties of trapped bosons Comment on: rotational properties of trapped bosons

2000-04-13

arxiv.org/abs/cond-mat/0004208v1

Phys. Rev. A 55, 2453 (1997)

Physics

Condensed Matter

Statistical Mechanics

Herewith we repost our paper cond-mat/9611090 (1996). It was published in Phys. Rev. A 55, 2453 (March 1997), three years befo

Scientific paper

10.1103/PhysRevA.55.2453

Based on the Hellman-Feynman theorem it is shown that the average square radius of a cloud of interacting bosons in a parabolic well can be derived from their free energy. As an application, the temperature dependence of the moment of inertia of non-interacting bosons in a parabolic trap is determined as a function of the number of bosons. Well below the critical condensation temperature, the Bose-Einstein statistics are found to substantially reduce the moment of inertia of this system, as compared to a gas of ``distinguishable'' particles in a parabolic well.

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