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arXiv 0907.0825cond-mat.dis-nncond-mat.stat-mech
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具有短程和长程随机键的无标度网络中的临界逾渗相和热BKT相变

Critical Percolation Phase and Thermal BKT Transition in a Scale-Free Network with Short-Range and Long-Range Random Bonds

A. Nihat Berker, Michael Hinczewski, Roland R. Netz

摘要:

利用重正化群理论,根据短程键和长程键的不同概率,精确求解了无标度等级网络中的渗流问题。在相图中,除了普通的(紧凑的)澄清相和非澄清相之外,还出现了具有代数(Berezinskiii-Kosterlitz-无代数)几何顺序的临界渗流相。它被发现,没有连接之间存在的,一方面,这种几何BKT行为的发病,另一方面,发病的高度聚集的小世界字符的网络和热BKT过渡的伊辛模型在这个网络。然而,几何和热BKT行为有反转字符,发生在预期的混乱,即在低键概率和高温下,分别。这可能是远程网络的一般属性。

英文摘要:

Percolation in a scale-free hierarchical network is solved exactly by renormalization-group theory, in terms of the different probabilities of short-range and long-range bonds. A phase of critical percolation, with algebraic (Berezinskii-Kosterlitz-Thouless) geometric order, occurs in the phase diagram, in addition to the ordinary (compact) percolating phase and the non-percolating phase. It is found that no connection exists between, on the one hand, the onset of this geometric BKT behavior and, on the other hand, the onsets of the highly clustered small-world character of the network and of the thermal BKT transition of the Ising model on this network. Nevertheless, both geometric and thermal BKT behaviors have inverted characters, occurring where disorder is expected, namely at low bond probability and high temperature, respectively. This may be a general property of long-range networks.

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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