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Condensed Matter > Quantum Gases
Title: Temperature-induced supersolidity in spin-orbit-coupled Bose gases
(Submitted on 14 Dec 2023 (v1), last revised 27 Mar 2024 (this version, v2))
Abstract: Close to the superfluid plane-wave (PW) - supersolid stripe (ST) phase transition point of a zero temperature quasi-one-dimensional spin-orbit-coupled Bose gas, we find that an increase in temperature induces a phase transition to the supersolid phase with a broken translational symmetry from the superfluid plane-wave phase. We use the Hartree-Fock-Bogoliubov theory with the Popov approximation to investigate the effect of thermal fluctuations on the collective excitation spectrum and investigate the softening of the spin-dipole mode corresponding to the shift in the quantum critical point. This is in stark contrast to the PW-ST phase transition in a homogeneous system where non-zero temperatures facilitate the melting of the stripe phase.
Submission history
From: Rajat Gautam [view email][v1] Thu, 14 Dec 2023 08:04:11 GMT (763kb,D)
[v2] Wed, 27 Mar 2024 17:47:10 GMT (1012kb,D)
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