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arXiv 2001.06527cond-mat.dis-nnmath-phmath.MPmath.PR
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两种自旋玻璃模型的基态稳定性

Ground state stability in two spin glass models

L. -P. Arguin, C. M. Newman, D. L. Stein

摘要:

自旋玻璃的一个重要但很少被研究的性质是它们的基态对一个或有限数量的耦合的变化的稳定性。在早期的工作中已经表明,如果假设存在多个基态,那么它们的能量差的波动-因此也就是多个基态的可能性-与它们的基态的稳定性密切相关。在这里,我们研究了两种模型中基态的稳定性,其中之一被假定为具有基态结构,定性类似于其他现实的短程自旋玻璃在有限的尺寸。

英文摘要:

An important but little-studied property of spin glasses is the stability of their ground states to changes in one or a finite number of couplings. It was shown in earlier work that, if multiple ground states are assumed to exist, then fluctuations in their energy differences --- and therefore the possibility of multiple ground states --- are closely related to the stability of their ground states. Here we examine the stability of ground states in two models, one of which is presumed to have a ground state structure that is qualitatively similar to other realistic short-range spin glasses in finite dimensions.

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