High-density limit of quasi-two-dimensional dipolar Bose gas

Volodymyr Pastukhov

doi:10.1016/j.aop.2016.05.002

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arXiv · 1510.04559

High-density limit of quasi-two-dimensional dipolar Bose gas

Volodymyr Pastukhov

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Abstract

We consider a simple model of the quasi-two-dimensional dipolar Bose gas confined in the one-dimensional square well potential. All dipoles are assumed to be oriented along the confining axis. By means of hydrodynamic approach it is shown that the general structure of the low-lying excitations can be analyzed exactly. We demonstrate that the problem significantly simplifies in the high-density limit for which the density profile in the confined direction as well as the leading-order contribution to the ground-state energy and spectrum of elementary excitations are calculated. The low-temperature result for the damping rate of the phonon mode is also presented.

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Volodymyr Pastukhov. 2015-10-15. High-density limit of quasi-two-dimensional dipolar Bose gas. https://doi.org/10.1016/j.aop.2016.05.002

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