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arXiv 1702.00445cond-mat.str-el
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多体局域化跃迁、洛希耳特回波的时间起伏和加扰

Many-Body Localization Transition, Temporal Fluctuations of the Loschmidt Echo, and Scrambling

Jun Yang, Alioscia Hamma

摘要:

我们表明,ETH相和多体局域化相之间的过渡是由不同的有限尺寸标度行为的衰减的Loschiral回声和其时间波动-量子淬火后-在无限的时间限制,尽管事实上,有限时间行为的这些数量是显着不同的方法MBL相,因此,时间波动不能从Loschirt回声的无限时间平均值中推断出来。我们还展示了ETH和MBL哈密顿算子的不同扰频能力,作为对不同平衡方法的探索。

英文摘要:

We show that the transition between a ETH phase and a many-body localized phase is marked by the different finite size scaling behaviour of the decay of the Loschmidt Echo and its temporal fluctuations - after a quantum quench - in the infinite time limit, despite the fact that the finite time behaviour of such quantities is dramatically different approach the MBL phase, so that temporal fluctuations cannot be inferred from the infinite time average of the Loschmidt Echo. We also show the different scrambling powers of ETH and MBL Hamiltonians as a probe to the different approaches to equilibrium.

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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