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題名 CRITICAL TWO-POINT FUNCTIONS FOR LONG-RANGE STATISTICAL-MECHANICAL MODELS IN HIGH DIMENSIONS
作者 陳隆奇
Chen, Lung-Chi
Sakai, Akira
貢獻者 應數系
日期 2015-02
上傳時間 13-Jan-2016 16:23:13 (UTC+8)
摘要 We consider long-range self-avoiding walk, percolation and the Ising model on ZdZd that are defined by power-law decaying pair potentials of the form D(x)≍|x|−d−αD(x)≍|x|−d−α with α>0α>0. The upper-critical dimension dcdc is 2(α∧2)2(α∧2) for self-avoiding walk and the Ising model, and 3(α∧2)3(α∧2) for percolation. Let α≠2α≠2 and assume certain heat-kernel bounds on the nn-step distribution of the underlying random walk. We prove that, for d>dcd>dc (and the spread-out parameter sufficiently large), the critical two-point function Gpc(x)Gpc(x) for each model is asymptotically C|x|α∧2−dC|x|α∧2−d, where the constant C∈(0,∞)C∈(0,∞) is expressed in terms of the model-dependent lace-expansion coefficients and exhibits crossover between α<2α<2 and α>2α>2. We also provide a class of random walks that satisfy those heat-kernel bounds.
關聯 The Annals of Probability, 43(2), 639-681.
資料類型 article
DOI http://dx.doi.org/10.1214/13-AOP843
dc.contributor 應數系-
dc.creator (作者) 陳隆奇-
dc.creator (作者) Chen, Lung-Chi-
dc.creator (作者) Sakai, Akiraen_US
dc.date (日期) 2015-02-
dc.date.accessioned 13-Jan-2016 16:23:13 (UTC+8)-
dc.date.available 13-Jan-2016 16:23:13 (UTC+8)-
dc.date.issued (上傳時間) 13-Jan-2016 16:23:13 (UTC+8)-
dc.identifier.uri (URI) http://nccur.lib.nccu.edu.tw/handle/140.119/80555-
dc.description.abstract (摘要) We consider long-range self-avoiding walk, percolation and the Ising model on ZdZd that are defined by power-law decaying pair potentials of the form D(x)≍|x|−d−αD(x)≍|x|−d−α with α>0α>0. The upper-critical dimension dcdc is 2(α∧2)2(α∧2) for self-avoiding walk and the Ising model, and 3(α∧2)3(α∧2) for percolation. Let α≠2α≠2 and assume certain heat-kernel bounds on the nn-step distribution of the underlying random walk. We prove that, for d>dcd>dc (and the spread-out parameter sufficiently large), the critical two-point function Gpc(x)Gpc(x) for each model is asymptotically C|x|α∧2−dC|x|α∧2−d, where the constant C∈(0,∞)C∈(0,∞) is expressed in terms of the model-dependent lace-expansion coefficients and exhibits crossover between α<2α<2 and α>2α>2. We also provide a class of random walks that satisfy those heat-kernel bounds.-
dc.format.extent 400655 bytes-
dc.format.mimetype application/pdf-
dc.relation (關聯) The Annals of Probability, 43(2), 639-681.-
dc.title (題名) CRITICAL TWO-POINT FUNCTIONS FOR LONG-RANGE STATISTICAL-MECHANICAL MODELS IN HIGH DIMENSIONS-
dc.type (資料類型) article-
dc.identifier.doi (DOI) 10.1214/13-AOP843-
dc.doi.uri (DOI) http://dx.doi.org/10.1214/13-AOP843-