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arXiv 1806.09398cond-mat.stat-mech
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当边界条件有利于两相之一时一阶量子跃迁的有限尺寸标度

Finite-size scaling at first-order quantum transitions when boundary conditions favor one of the two phases

Andrea Pelissetto, Davide Rossini, Ettore Vicari

摘要:

我们研究了一阶量子跃迁的标度现象,当边界条件有利于两个阶段之一时。我们表明,相应的有限尺寸标度行为,所产生的驱动参数和系统的有限尺寸之间的相互作用,是更复杂的比出现时,边界条件不有利于任何阶段。我们在一维量子伊辛模型的框架下,沿着外纵场驱动的一阶量子跃迁线讨论了这个问题。

英文摘要:

We investigate scaling phenomena at first-order quantum transitions, when the boundary conditions favor one of the two phases. We show that the corresponding finite-size scaling behavior, arising from the interplay between the driving parameter and the finite size of the system, is more complex than that emerging when boundary conditions do not favor any phase. We discuss this issue in the framework of the paradigmatic one-dimensional quantum Ising model, along its first-order quantum transition line driven by an external longitudinal field.

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