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arXiv 0907.2419cond-mat.stat-mechcond-mat.dis-nnmath-phmath.MP
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具有淬火无序的低维量子系统一级跃迁的圆化

Rounding of First Order Transitions in Low-Dimensional Quantum Systems with Quenched Disorder

Rafael L. Greenblatt, Michael Aizenman, Joel L. Lebowitz

摘要:

我们证明了在d <= 2维或d <= 4维连续对称的量子自旋系统中,适当类型的任意小的随机微扰使共轭序参量的一级相变圆化.这严格地为量子系统建立了伊姆里-马现象的存在,经典系统的伊姆里-马现象已由艾泽曼和韦尔证明。

英文摘要:

We prove that the addition of an arbitrarily small random perturbation of a suitable type to a quantum spin system rounds a first order phase transition in the conjugate order parameter in d <= 2 dimensions, or in systems with continuous symmetry in d <= 4. This establishes rigorously for quantum systems the existence of the Imry-Ma phenomenon, which for classical systems was proven by Aizenman and Wehr.

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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