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Condensed Matter > Quantum Gases
Title: Staggered quantum phases of dipolar bosons at finite temperatures
(Submitted on 9 Nov 2022 (v1), last revised 7 Dec 2022 (this version, v2))
Abstract: The extended Bose-Hubbard model with correlated tunneling exhibits staggered superfluid and supersolid quantum phases. We study finite-temperature phase transitions of quantum phases of dipolar bosons in a two-dimensional optical lattice using Gutzwiller mean-field and quantum Monte Carlo approaches. When nearest-neighbor repulsion is comparable to the on-site interaction, we find that the two topologically distinct superfluids are separated by a normal fluid phase, while at stronger off-site interactions, density-modulated insulating quantum phases appear. We estimate the critical temperature of the staggered superfluid to normal fluid transition and show that this transition is of the Kosterlitz-Thouless type. Finally, we elucidate the coexistence of staggered quantum phases in the presence of an external trapping potential. Our study paves a way to observe novel staggered quantum phases in recent dipolar optical lattice experiments.
Submission history
From: Kuldeep Suthar [view email][v1] Wed, 9 Nov 2022 11:44:45 GMT (1744kb,D)
[v2] Wed, 7 Dec 2022 04:38:13 GMT (1931kb,D)
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