Adiabatic loading of one-dimensional SU(N) alkaline-earth-atom fermions in optical lattices.
Adiabatic loading of one-dimensional SU(N) alkaline-earth-atom fermions in optical lattices.
复制标题
光学晶格中一维 SU(N) 碱土原子费米子的绝热加载。
DOI：
10.1103/physrevlett.109.205305
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发表时间：
2012
影响因子：
8.6
通讯作者：
S. Wessel
中科院分区：
文献类型：
--
作者：
L. Bonnes;K. Hazzard;S. Manmana;A. Rey;S. Wessel
限制在光学晶格中的超冷费米子碱土原子实现了具有内部SU（N）对称性的哈伯德模型，其中N可以大到10。这样的系统有望在低于超交换能量标度的温度下拥有奇异的磁物理学。采用量子Monte Carlo模拟访问的低温制度的一维链，我们表明，在气动加载后，弱相互作用的气体到强相互作用的制度的光晶格，最终的温度随N的增加而降低。此外，我们估计了探测与低温SU（N）磁性相关的温度标度。我们的研究结果是令人鼓舞的探索异国情调的大N磁态在正在进行的实验。
Ultracold fermionic alkaline earth atoms confined in optical lattices realize Hubbard models with internal SU(N) symmetries, where N can be as large as ten. Such systems are expected to harbor exotic magnetic physics at temperatures below the superexchange energy scale. Employing quantum Monte Carlo simulations to access the low-temperature regime of one-dimensional chains, we show that after adiabatically loading a weakly interacting gas into the strongly interacting regime of an optical lattice, the final temperature decreases with increasing N. Furthermore, we estimate the temperature scale required to probe correlations associated with low-temperature SU(N) magnetism. Our findings are encouraging for the exploration of exotic large-N magnetic states in ongoing experiments.
影响因子：
3.3
作者：
Cazalilla, M. A.;Ho, A. F.;Ueda, M.
通讯作者：
Ueda, M.