期刊
PHYSICAL REVIEW A
卷 85, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.85.021601
关键词
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资金
- JSPS
- KAKENHI from JSPS [22840051]
- ARO [W911NF-09-1-0220]
- Grants-in-Aid for Scientific Research [23840054, 22840051] Funding Source: KAKEN
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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