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arXiv 1006.1685cond-mat.quant-gas
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光晶格中具有排斥相互作用的三分量费米子原子的Mott跃迁

Mott Transitions of Three-Component Fermionic Atoms with Repulsive Interaction in Optical Lattices

Kensuke Inaba, Shin-ya Miyatake, Sei-ichiro Suga

摘要:

利用动力学平均场论研究了光晶格中三分量(色)排斥费米子原子的Mott跃迁。我们发现对于SU(3)对称性破缺相互作用,Mott跃迁发生在无公度半填充处。结果,出现了一个特征性的莫特绝缘态,其中具有两种不同颜色的成对原子和具有第三种颜色的原子位于不同的位置。我们还发现了另一种Mott态,其中两种不同颜色的原子位于不同的位置,第三种颜色的原子保持巡回。我们证明,这些外来莫特阶段可以检测到实验的双重占有观测。

英文摘要:

We investigate the Mott transitions of three-component (colors) repulsive fermionic atoms in optical lattices using the dynamical mean field theory. We find that for SU(3) symmetry breaking interactions the Mott transition occurs at incommensurate half filling. As a result, a characteristic Mott insulating state appears, where paired atoms with two different colors and atoms with the third color are localized at different sites. We also find another Mott state where atoms with two different colors are localized at different sites and atoms with the third color remain itinerant. We demonstrate that these exotic Mott phases can be detected by experimental double occupancy observations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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