University of Minnesota
School of Physics & Astronomy
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Publications

Alex Kamenev

“Absence of Bose condensation in certain frustrated lattices”
Sedrakyan, Glazman, and Kamenev, arXiv:1303.7272 (2014)

Download from http://arxiv.org/abs/1303.7272v1

Abstract

We study hard-core bosons on a class of frustrated lattices with the lowest Bloch band having a degenerate minimum along a closed contour in the reciprocal space. We suggest that the ground state of the system is given by non-condensed state, which may be viewed as a state of fermions subject to Chern-Simons gauge field. At fixed density of bosons, such a state exhibits domains of incompressible liquids. Their fixed densities are given by fractions of the reciprocal area enclosed by the minimal energy contour.