Quantum dynamics of impenetrable SU(N) fermions in one-dimensional lattices
Quantum dynamics of impenetrable SU(N) fermions in one-dimensional lattices
复制标题
DOI：
10.1103/physreva.99.063605
复制
发表时间：
2018-08
影响因子：
2.9
通讯作者：
Yicheng Zhang;L. Vidmar;M. Rigol
中科院分区：
文献类型：
--
作者：
Yicheng Zhang;L. Vidmar;M. Rigol
We study SU(N) fermions in the limit of infinite on-site repulsion between all species. We focus on states in which every pair of consecutive fermions carries a different spin flavor. Since the particle order cannot be changed (because of the infinite on-site repulsion) and contiguous fermions have a different spin flavor, we refer to the corresponding constrained model as the model of distinguishable quantum particles. We introduce an exact numerical method to calculate equilibrium one-body correlations of distinguishable quantum particles based on a mapping onto noninteracting spinless fermions. In contrast to most many-body systems in one dimension, which usually exhibit either power-law or exponential decay of off-diagonal one-body correlations with distance, distinguishable quantum particles exhibit a Gaussian decay of one-body correlations in the ground state, while finite-temperature correlations are well described by stretched exponential decay.
