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arXiv 1001.0844quant-ph
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横向伊辛模型中的纠缠动力学

Dynamics of entanglement in the transverse Ising model

Zhe Chang, Ning Wu

摘要:

研究了具有外横场的一维伊辛模型中最近邻纠缠的演化。系统初始化为纯伊辛模型的所谓“热基态“。我们分析了外横场不同区域纠缠的产生特性。我们发现,在该时间处的纠缠达到其第一个最大值的倒数横向场的导数在临界点有一个最小值。这是量子相变的一个新指标。

英文摘要:

We study the evolution of nearest-neighbor entanglement in the one dimensional Ising model with an external transverse field. The system is initialized as the so called "thermal ground state" of the pure Ising model. We analyze properties of generation of entanglement for different regions of external transverse fields. We find that the derivation of the time at which the entanglement reaches its first maximum with respect to the reciprocal transverse field has a minimum at the critical point. This is a new indicator of quantum phase transition.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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