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| | '''渗流阈值(Percolation Threshold, pc)''' 是指在给定网络或材料结构中,某一关键占据概率下首次出现“无限连通集群”的临界点。也就是说,当连接概率[math]\displaystyle{ \ p < p_c }[/math]时,系统中的集群都是有限的;当[math]\displaystyle{ \ p >p_c }[/math] 时,有正概率形成覆盖系统的大规模连通路径。这个“突然出现”的无限集群是渗流理论中的核心相变现象,其对应于系统宏观性质(如电导、流体通量、力学性能)的突变。 | | '''渗流阈值(Percolation Threshold, pc)''' 是指在给定网络或材料结构中,某一关键占据概率下首次出现“无限连通集群”的临界点。也就是说,当连接概率[math]\displaystyle{ \ p < p_c }[/math]时,系统中的集群都是有限的;当[math]\displaystyle{ \ p >p_c }[/math] 时,有正概率形成覆盖系统的大规模连通路径。这个“突然出现”的无限集群是渗流理论中的核心相变现象,其对应于系统宏观性质(如电导、流体通量、力学性能)的突变。 |
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| − | 在渗流理论中,'''渗流阈值'''(常用符号表示{{Math|''p''<sub>''c''</sub>}}指的是使无限系统出现从局部连接跃迁至全局连通的最小概率。当填充概率[math]\displaystyle{ \ p < p_c }[/math]时,系统中不会出现贯通路径,而当[math]\displaystyle{ \ p >p_c }[/math]时,出现无限集群的概率从0跃升为1,这种突变是典型的相变现象,符合所谓的'''零一律'''(0–1law)。 | + | 在渗流理论中,'''渗流阈值'''(常用符号表示{{Math|''p''<sub>''c''</sub>}}指的是使无限系统出现从局部连接跃迁至全局连通的最小概率<ref name=":0">Stauffer D, Aharony A. Introduction to Percolation Theory. CRC Press, 2014.</ref>。当填充概率[math]\displaystyle{ \ p < p_c }[/math]时,系统中不会出现贯通路径,而当[math]\displaystyle{ \ p >p_c }[/math]时,出现无限集群的概率从0跃升为1,这种突变是典型的相变现象<ref name=":0" />,符合所谓的'''零一律'''(0–1law)。 |
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| | 数学上,如果将系统建模为图[math]\displaystyle{ G = (V,E) }[/math],渗流模型会随机选择子集[math]\displaystyle{ E' \subset E }[/math]或[math]\displaystyle{ V' \subset V }[/math],使得每条边或每个顶点以概率[math]\displaystyle{ p }[/math]被"激活"。当[math]\displaystyle{ p > p_c }[/math]时,图中几乎总是存在一条连接任意两个远点的大路径。 | | 数学上,如果将系统建模为图[math]\displaystyle{ G = (V,E) }[/math],渗流模型会随机选择子集[math]\displaystyle{ E' \subset E }[/math]或[math]\displaystyle{ V' \subset V }[/math],使得每条边或每个顶点以概率[math]\displaystyle{ p }[/math]被"激活"。当[math]\displaystyle{ p > p_c }[/math]时,图中几乎总是存在一条连接任意两个远点的大路径。 |
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| | === '''参考资料''' === | | === '''参考资料''' === |
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| − | | + | # Broadbent S R, Hammersley J M. Percolation processes. Mathematical Proceedings of the Cambridge Philosophical Society, 1957. |
| − | [1]Broadbent, S. R.; Hammersley, J. M. Percolation processes. Mathematical Proceedings of the Cambridge Philosophical Society. 1953, 53(03):629.Bibcode:1957PCPS...53..629B.ISSN0305-0041.doi:10.1017/S0305004100032680.
| + | # Stauffer D, Aharony A. Introduction to Percolation Theory. CRC Press, 2014. |
| − | | + | # Grimmett G. Percolation (2nd ed.). Springer, 1999. |
| − | [2]Dietrich Stauffer; Ammon Aharony. Introduction to percolation theory revised second edition. CRC press. 2014. <nowiki>ISBN 0748400273</nowiki>.
| + | # Kesten H. Percolation Theory for Mathematicians. Birkhäuser, 1982. |
| − | | + | # Saberi A A. Recent advances in percolation theory. Physics Reports, 2015. |
| − | [3]Bollobás, Béla; Riordan, Oliver. Sharp thresholds and percolation in the plane. Random Structures and Algorithms. 2006, 29 (4): 524–548. ISSN 1042-9832. doi:10.1002/rsa.20134
| + | # Albert R, Jeong H, Barabási A L. Error and attack tolerance of complex networks. Nature, 2000. |
| − | | + | # Balberg I. Electrical phenomena in carbon black-polymer composites. Carbon, 2002. |
| − | [4]Jacobsen, J. L. High-precision percolation thresholds and Potts-model critical manifolds from graph polynomials. J. Phys. A: Math. Theor. 2014, 47(13):135001.Bibcode:2014JPhA...47m5001G.doi:10.1088/1751-8113/47/13/135001
| + | # Zhang R et al. Optical percolation in nanoparticle arrays. ACS Nano, 2016. |
| − | | + | # Montroll E W, Weiss G H. Random walks on lattices. Journal of Mathematical Physics, 1965. |
| − | [5]Deng, Youjin; H. W. J. Blöte. Monte Carlo study of the site-percolation model in two and three dimensions. Physical Review E. 2005, 72 (1): 016126. Bibcode:2005PhRvE..72a6126D. doi:10.1103/PhysRevE.72.016126
| + | # Smirnov S. Critical percolation in the plane. Comptes Rendus de l'Académie des Sciences, 2001. |
| − | | + | # Wu Z et al. Machine learning prediction of percolation thresholds. Nature Materials, 2023. |
| − | [6]Lorenz, C. D.; R. M. Ziff. Precise determination of the bond percolation thresholds and finite-size scaling corrections for the sc, fcc, and bcc lattices. Physical Review E. 1998, 57: 230–236. Bibcode:1998PhRvE..57..230L. arXiv:cond-mat/9710044
| + | # Frankle J, Carbin M. The lottery ticket hypothesis. ICLR, 2019. |
| | + | # Eisenman I, Wettlaufer J S. Nonlinear threshold behavior during Arctic sea ice loss. PNAS, 2009. |
| | + | # Deng Y, Blöte H W J. Monte Carlo study of site-percolation. Physical Review E, 2005. |
| | + | # Lorenz C D, Ziff R M. Precise bond percolation thresholds. Physical Review E, 1998. |
| | + | # Jacobsen J L. High-precision percolation thresholds. J. Phys. A: Math. Theor, 2014. |
| | + | # Duminil-Copin H. Sharp threshold phenomena. Proc. ICM, 2021. |
| | + | # Buldyrev S V et al. Catastrophic cascade of failures. Nature, 2010. |
| | + | # Sahimi M. Applications of percolation theory. Taylor & Francis, 2020. |