论文标题
玻色子在光学晶格中的多体定位：无序电位中的动力学
Many-body localization of bosons in optical lattice: Dynamics in disorder-free potentials
论文作者
论文摘要
研究了玻色子在倾斜光学晶格中多体stark定位的现象。尽管事实上，史塔克定位并不需要混乱，但它与众所周知的许多人体定位（MBL）非常相似。不仅平均间隙比以局部情况的特征达到泊松值，而且本征态也揭示了类似于标准MBL中的多重分子特征。 Stark定位使谐波陷阱中的空间分离的热相和局部相之间存在类似于费米子的共存。鲜明的定位也可能导致粒子在反向的谐波场中的壮观捕获，这可能被视为不稳定的配置。
The phenomenon of Many-Body Stark Localization of bosons in tilted optical lattice is studied. Despite the fact that no disorder is necessary for Stark localization to occur, it is very similar to well known many body localization (MBL) in sufficiently strong disorder. Not only the mean gap ratio reaches poissonian value as characteristic for localized situations but also the eigenstates reveal multifractal character as in standard MBL. Stark localization enables a coexistence of spacially separated thermal and localized phases in the harmonic trap similarly to fermions. Stark localization may also lead to spectacular trapping of particles in a reversed harmonic field which naively might be considered as an unstable configuration.
