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arXiv 1909.06196cond-mat.dis-nn
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p-自旋玻璃球模型自由能的大偏差

Large deviations of the free energy in the p-spin glass spherical model

Mauro Pastore, Andrea Di Gioacchino, Pietro Rotondo

摘要:

我们研究了p自旋球模型中自由能的罕见涨落的行为,通过Gärtner-Ellis定理计算了相应的速率函数。这种方法需要无序平均复制配分函数到任意实数复制的解析延拓的知识。在零外部磁场中,我们通过一步复本对称性破缺(1 RSB)计算表明,速率函数是无限的波动的自由能高于其典型值,对应于一个异常的,超广泛的抑制罕见的波动。我们将此计算扩展到非零磁场,表明在这种情况下,这种非常大的偏差消失,我们试图激发这一发现在光的缩放累积量生成函数的几何解释。

英文摘要:

We investigate the behavior of the rare fluctuations of the free energy in the p-spin spherical model, evaluating the corresponding rate function via the Gärtner-Ellis theorem. This approach requires the knowledge of the analytic continuation of the disorder-averaged replicated partition function to arbitrary real number of replicas. In zero external magnetic field, we show via a one-step replica symmetry breaking (1RSB) calculation that the rate function is infinite for fluctuations of the free energy above its typical value, corresponding to an anomalous, super-extensive suppression of rare fluctuations. We extend this calculation to non-zero magnetic field, showing that in this case this very large deviation disappears and we try to motivate this finding in light of a geometrical interpretation of the scaled cumulant generating function.

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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