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arXiv 0909.4215cond-mat.dis-nn
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磁化强度作为磁化参数:稀磁

Magnetization Densities as Replica Parameters: The Dilute Ferromagnet

Maurizio Serva

摘要:

本文精确计算了稀磁伊辛模型的基态能量和熵。当存在随机位置的磁场时,也计算了这两个热力学量。通过Monasson引入的一类副本序参量,在副本逼近框架下得到了该结果。该策略首先说明考虑SK模型,我们将展示与标准副本方法的完全等效。然后,我们应用到具有随机磁场的稀磁伊辛模型,将其映射到Potts模型。原则上,这种形式主义可以应用于所有随机系统,我们相信它在许多其他情况下也会有所帮助。

英文摘要:

In this paper we compute exactly the ground state energy and entropy of the dilute ferromagnetic Ising model. The two thermodynamic quantities are also computed when a magnetic field with random locations is present. The result is reached in the replica approach frame by a class of replica order parameters introduced by Monasson. The strategy is first illustrated considering the SK model, for which we will show the complete equivalence with the standard replica approach. Then, we apply to the diluted ferromagnetic Ising model with a random located magnetic field, which is mapped into a Potts model. This formalism can be, in principle, applied to all random systems, and we believe that it could be of help in many other contexts.

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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