paper

Thermodynamics of non-interacting Bosons in low-dimensional potentials

arXiv:cond-mat/9611108 · doi:10.1007/s100530050060

Abstract

On the basis of a macroscopic ground state population it was argued recently that Bose-Einstein condensation should occur in a one-dimensional harmonic potential. We examine this situation by drawing analogies to Bosons in a two-dimensional box, where the thermodynamic limit is well-defined. We show that in both systems although the ground state populations show sharp onsets at the critical temperature, the behaviour of the specific heat is analytic, which proves the absence of a phase transition in these systems.

6 pages, 3 figures. Revised version contains some new material, titel has changed. This version is accepted for publication in European Physical Journal D

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