paper

Full counting statistics and large deviations in thermal 1D Bose gas

arXiv:1807.09381 · doi:10.1103/PhysRevLett.122.120401

Abstract

We obtain the distribution of number of atoms in an interval (full counting statistics) of Lieb-Liniger model of interacting bosons in one dimension. Our results are valid in the weakly interacting regime in a parametrically large window of temperatures and interval lengths. The obtained distribution deviates strongly from a Gaussian away from the quasi-condensate regime, and, for sufficiently short intervals, the probability of large number fluctuations is strongly enhanced.

5 pages, 3 figures main text + 3 pages, 3 figures Supplementary Material,

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