论文标题
在轻锥边缘的踢链中的局部相关性确切
Exact local correlations in kicked chains at light cone edges
论文作者
论文摘要
我们表明，可以在光锥边缘精确计算一系列踢链中的局部相关器。扩展了以前的双层系统上的工作，本地运营商之间的相关器是通过转移矩阵$ t $具有小维度的期望值表示的。与以前的研究相反，我们的结果不仅限于具有动力学时空对称性的双重独立系统。它们可容纳通用情况，而无需微调模型参数。结果在踢式自旋链模型上举例说明了，在该模型中，我们为在双统一机制以外的光锥边缘附近的两点相关器提供明确的公式。
We show that local correlators in a wide class of kicked chains can be calculated exactly at light cone edges. Extending previous works on dual-unitary systems, the correlators between local operators are expressed through the expectation values of transfer matrices $T$ with small dimensions. Contrary to the previous studies, our results are not restricted to dual-unitary systems with spatial-temporal symmetry of the dynamics. They hold for a generic case without fine tuning of model parameters. The results are exemplified on the kicked Ising spin chain model, where we provide an explicit formula for two-point correlators near light cone edges beyond the dual-unitary regime.
