TY - JOUR
T1 - Absence of Bose condensation on lattices with moat bands
AU - Sedrakyan, Tigran A.
AU - Glazman, Leonid I.
AU - Kamenev, Alex
PY - 2014/5/16
Y1 - 2014/5/16
N2 - We study hard-core bosons on a class of frustrated lattices with the lowest Bloch band having a degenerate minimum along a closed contour, the moat, in the reciprocal space. We show that at small density the ground state of the system is given by a noncondensed 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-space area enclosed by the moat.
AB - We study hard-core bosons on a class of frustrated lattices with the lowest Bloch band having a degenerate minimum along a closed contour, the moat, in the reciprocal space. We show that at small density the ground state of the system is given by a noncondensed 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-space area enclosed by the moat.
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U2 - 10.1103/PhysRevB.89.201112
DO - 10.1103/PhysRevB.89.201112
M3 - Article
AN - SCOPUS:84901446673
SN - 1098-0121
VL - 89
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 20
M1 - 201112
ER -