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arXiv · 1803.05242

Ground-state properties of a dilute two-dimensional Bose gas

Volodymyr Pastukhov
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Abstract

We revisit the problem of the calculation of low-temperature properties for the dilute two-dimensional Bose gas. By using Popov's hydrodynamic approach and perturbation theory on the one-loop level we recover not only the known expansion for the ground-state energy but also calculate for the first time the condensate density and Tan's contact.

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Volodymyr Pastukhov. 2018-03-14. Ground-state properties of a dilute two-dimensional Bose gas. https://doi.org/10.1007/s10909-018-2082-1

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