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arXiv · 1003.4545

The equilibrium state of a trapped two-dimensional Bose gas

Steffen P. Rath·Tarik Yefsah·Kenneth J. Guenter·Marc Cheneau·Remi Desbuquois·Markus Holzmann·Werner Krauth·Jean Dalibard
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Abstract

We study experimentally and numerically the equilibrium density profiles of a trapped two-dimensional $^{87}$Rb Bose gas, and investigate the equation of state of the homogeneous system using the local density approximation. We find a clear discrepancy between in-situ measurements and Quantum Monte Carlo simulations, which we attribute to a non-linear variation of the optical density of the atomic cloud with its spatial density. However, good agreement between experiment and theory is recovered for the density profiles measured after time-of-flight, taking advantage of their self-similarity in a two-dimensional expansion.

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Steffen P. Rath, Tarik Yefsah, Kenneth J. Guenter, Marc Cheneau, Remi Desbuquois, Markus Holzmann, Werner Krauth, Jean Dalibard. 2010-03-23. The equilibrium state of a trapped two-dimensional Bose gas. https://doi.org/10.1103/physreva.82.013609

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