无限自旋链中纠缠的非遍历性及其对磁化的互补行为
Nonergodicity of entanglement and its complementary behavior to magnetization in infinite spin chain
摘要：
我们考虑的问题的有效性的统计力学描述的两个网站纠缠在一个无限自旋链描述的XY模型哈密顿量。我们发现，从初始的平衡态演化而来的态的两点纠缠，在改变磁场后，并没有接近其平衡值。这表明，两个网站纠缠，像（单点）磁化，是一个非遍历量在这个模型中。此外，我们表明，这两个非遍历量的行为互补的方式。
英文摘要：
We consider the problem of the validity of a statistical mechanical description of two-site entanglement in an infinite spin chain described by the XY model Hamiltonian. We show that the two-site entanglement of the state, evolved from the initial equilibrium state, after a change of the magnetic field, does not approach its equilibrium value. This suggests that two-site entanglement, like (single-site) magnetization, is a nonergodic quantity in this model. Moreover we show that these two nonergodic quantities behave in a complementary way.
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