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政大機構典藏 > 理學院 > 應用數學系 > 期刊論文 > Item 140.119/71425

Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/71425

Title:	Ice model and eight-vertex model on the two-dimensional Sierpinski gasket
Authors:	張書銓 Chang, Shu-Chiuan 陳隆奇 Chen, Lung-Chi 李欣芸 Lee, Hsin-Yun
Contributors:	應數系
Keywords:	Ice model;Eight-vertex model;Sierpinski gasket;Recursion relations;Entropy
Date:	2013.10
Issue Date:	2014-11-13 17:26:16 (UTC+8)
Abstract:	We present the numbers of ice model configurations (with Boltzmann factors equal to one) I(n)I(n) on the two-dimensional Sierpinski gasket SG(n)SG(n) at stage nn. The upper and lower bounds for the entropy per site, defined as limv→∞lnI(n)/vlimv→∞lnI(n)/v, where vv is the number of vertices on SG(n)SG(n), are derived in terms of the results at a certain stage. As the difference between these bounds converges quickly to zero as the calculated stage increases, the numerical value of the entropy can be evaluated with more than a hundred significant figures accuracy. The corresponding result of the ice model on the generalized two-dimensional Sierpinski gasket SGb(n)SGb(n) with b=3b=3 is also obtained, and the general upper and lower bounds for the entropy per site for arbitrary bb are conjectured. We also consider the number of eight-vertex model configurations on SG(n)SG(n) and the number of generalized vertex models Eb(n)Eb(n) on SGb(n)SGb(n), and obtain exactly Eb(n)=2{2(b+1)[b(b+1)/2]n+b+4}/(b+2)Eb(n)=2{2(b+1)[b(b+1)/2]n+b+4}/(b+2). It follows that the entropy per site is View the MathML sourcelimv→∞lnEb(n)/v=2(b+1)b+4ln2.
Relation:	Physica A, 392(8), 1776-1787
Data Type:	article
DOI 連結:	http://dx.doi.org/10.1016/j.physa.2013.01.005
DOI:	10.1016/j.physa.2013.01.005
Appears in Collections:	[應用數學系] 期刊論文

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