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arXiv · 1102.1317

Dipolar Bosons in Triangular Optical Lattices: Quantum Phase Transitions and Anomalous Hysteresis

Daisuke Yamamoto·Ippei Danshita·Carlos A. R. Sá de Melo
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Abstract

We study phase transitions and hysteresis in a system of dipolar bosons loaded into triangular optical lattices at zero temperature. We find that the quantum melting transition from supersolid to superfluid phase is first-order, in contrast with the previous report. We also find that due to strong quantum fluctuations the supersolid (or solid)-superfluid transition can exhibit an anomalous hysteretic behavior, in which the curve of density versus chemical potential does not form a standard loop structure. Furthermore, we show that the transition occurs unidirectionally along the anomalous hysteresis curve.

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Daisuke Yamamoto, Ippei Danshita, Carlos A. R. Sá de Melo. 2012-02-06. Dipolar Bosons in Triangular Optical Lattices: Quantum Phase Transitions and Anomalous Hysteresis. https://doi.org/10.1103/physreva.85.021601

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