Dimer model

수학노트
http://bomber0.myid.net/ (토론)님의 2011년 1월 14일 (금) 13:04 판
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introduction

 

 

basic notions
  • dimer configurations
  • set of dimer configurations
  • partition function
  • Kasteleyn matrix

 

 

physics motivation
  • Dimer configuration can be considered as the covering of the graph by pairs of fermions connected by an edge

 

 

Termperley equivalence
  • spanning trees on \gamma rooted at x
  • Dimers on D(\gamma)

 

 

Domino tiling and height function
  • bipartite graph

 

 

energy and weight systems
  • define a weight functionon the edges of the graph \gamma
    \(w:E(\Gamma)\to \mathbb{R}_{\geq 0}\)
  • For a dimer configuration D,
    \(w(D)=\prod_{e\in D} w(e)\)
  • energy function
    \(\epsilon:E(\Gamma)\to \mathbb{R}\)
  • For a dimer configuration D,
    \(\epsilon(D)=\sum_{e\in D} \epsilon(e)\)
  • energy and weight function
    \(w(e)=\exp (-\frac{\epsilon(e)}{T})\)
  • partition function
    \(Z_{\Gamma}=\sum_{D\subset \Gamma} \prod_{e\in D} w(e)\)

 

 

mathematica code
  1. detk[m_, n_] :=
     N[Product[
       Product[2 Cos[(Pi*l)/(m + 1)] + 2 I*Cos[(Pi*k)/(n + 1)], {k, 1,
         n}], {l, 1, m}], 10]
    Z[m_, n_] := Round[Sqrt[Abs[detk[m, n]]]]
    Z[8, 8]

 

 

memo

 

 

history

 

 

related items[[Schramm–Loewner evolution (SLE)|]]

 

 

encyclopedia

 

 

books

 

 

links

 

 

expositions

 

 

articles

 

 

question and answers(Math Overflow)

 

 

blogs