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arXiv · 1311.1028

Breakdown of scale invariance in a quasi-two-dimensional Bose gas due to the presence of the third dimension

Karina Merloti·Romain Dubessy·Laurent Longchambon·Maxim Olshanii·Hélène Perrin
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Abstract

In this Rapid Communication, we describe how the presence of the third dimension may break the scale invariance in a two-dimensional Bose gas in a pancake-shaped trap. From the two-dimensional perspective, the possibility of a weak spilling of the atomic density beyond the ground-state of the confinement alters the two-dimensional chemical potential; in turn, this correction no longer supports scale invariance. We compare experimental data with numerical and analytic perturbative results and find a good agreement.

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Karina Merloti, Romain Dubessy, Laurent Longchambon, Maxim Olshanii, Hélène Perrin. 2013-12-28. Breakdown of scale invariance in a quasi-two-dimensional Bose gas due to the presence of the third dimension. https://doi.org/10.1103/physreva.88.061603

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