Statistics-dependent quantum co-walking of two particles in one-dimensional lattices with nearest-neighbor interactions

  title={Statistics-dependent quantum co-walking of two particles in one-dimensional lattices with nearest-neighbor interactions},
  author={Xizhou Qin and Yongguan Ke and Xi-Wen Guan and Zhibing Li and Natan Andrei and Chaohong Lee},
  journal={Physical Review A},
We investigate continuous-time quantumwalks of two indistinguishable particles [two bosons, or two fermions, or two hard-core bosons (HCBs)] in one-dimensional lattices with nearest-neighbor interactions. The results for two HCBs are consistent with the recent experimental observation of two-magnon dynamics [Fukuhara et al., Nature (London) 502, 76 (2013)]. The two interacting particles can undergo independent walking and/or co-walking depending on both quantum statistics and interaction… 

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