论文标题
在开放边界驱动的海森堡旋转晶格中的远程相互作用：向弹道传输的远距离过渡
Long-range interaction in an open boundary-driven Heisenberg spin lattice: A far-from-equilibrium transition to ballistic transport
论文作者
论文摘要
我们研究了一个开放的海森堡XXZ自旋链，具有远距离的ISING型相互作用，该链在其边界处不连贯，因此诱发了远程平衡的稳态电流。量子蒙特卡洛技术使系统大小足够大，可以检查从扩散到弹道传输方案的过渡。我们发现，这种过渡的链长随着遥远的旋转之间的ISING型相互作用的范围降低而增加，而不一致的驱动力的强度对运输过渡没有相关的影响。该过渡可以通过抑制链边缘的铁磁结构域的抑制来解释。
We study an open Heisenberg XXZ spin chain with long-range Ising-type interaction, which is incoherently driven at its boundaries and therefore a far-from-equilibrium steady state current is induced. Quantum Monte Carlo techniques make a regime accessible, where the system size is large enough to examine the transition from a diffusive to a ballistic transport regime. We find that the chain lengths for this transition are increasing with decreasing range of the Ising-type interactions between distant spins, while the strength of the incoherent driving does not have a relevant effect on the transport transition. The transition can be explained by the suppression of ferromagnetic domains at the edges of the chain.
