Thermocrystallization of lattice dipolar bosons coupled to a high-finesse cavity
arxiv(2024)
摘要
Investigating finite temperature effects on quantum phases is key to their
experimental realization. Finite temperature, and the interplay between quantum
and thermal fluctuations can undermine properties and/or key features of
quantum systems but they can also bring upon interesting phenom- ena. In this
paper, we present a comprehensive investigation of the finite temperature phase
diagram of two-dimensional lattice dipolar bosons coupled to a high-finesse
optical cavity. Interestingly, we observe that checkerboard density-density
correlations are enhanced at finite temperature. Indeed, we found that finite
temperature drives a superfluid ground state into a normal state which will
then develop checkerboard order at higher temperatures. We show that this
effect is solely due to the cavity-mediated interactions. We also confirm that
the supersolid checkerboard phase survives for a wide range of filling factors
up to temperature scale of the order of half hopping amplitude, while the
checkerboard diagonal order can survive up to temperatures of a few hopping
amplitudes.
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