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arXiv quant-ph/0103157quant-ph
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纠缠诱导的相变

Entanglement Induced Phase Transitions

Dorje C. Brody, Lane P. Hughston, Matthew F. Parry

摘要:

从纯量子态空间的正则系综出发,得到了配分函数的积分表示。这是用来计算一个系统的磁化N自旋1/2粒子。结果表明,存在一种新型的一级相变,发生在零温度下,没有自旋-自旋相互作用。这种跃迁是量子纠缠的结果。内部相互作用的影响进行了分析,并确定了少量相互作用自旋的磁化率的行为。

英文摘要:

Starting from the canonical ensemble over the space of pure quantum states, we obtain an integral representation for the partition function. This is used to calculate the magnetisation of a system of N spin-1/2 particles. The results suggest the existence of a new type of first order phase transition that occurs at zero temperature in the absence of spin-spin interactions. The transition arises as a consequence of quantum entanglement. The effects of internal interactions are analysed and the behaviour of the magnetic susceptibility for a small number of interacting spins is determined.

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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