Berezinskii-Kosterlitz-Thouless transition in two-dimensional dipole systems

Details Berezinskii-Kosterlitz-Thouless transition in two-dimensional dipole systems Berezinskii-Kosterlitz-Thouless transition in two-dimensional dipole systems

2010-04-25

arxiv.org/abs/1004.4362v1

Physics

Atomic Physics

Scientific paper

The superfluid to normal fluid transition of dipolar bosons in two dimensions is studied throughout the whole density range using path integral Monte Carlo simulations and summarized in the phase diagram. While at low densities, we find good agreement with the universal results depending only on the scattering length $a_s$, at moderate and high densities, the transition temperature is strongly affected by interactions and the elementary excitation spectrum. The results are expected to be of relevance to dipolar atomic and molecular systems and indirect excitons in quantum wells.

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