We provide a concise exposition with original proofs of combinatorial formulas for the 2D Ising model partition function, multi-point fermionic observables, spin and energy density correlations, for general graphs and interaction constants, using the language of Kac–Ward matrices. We also give a brief account of the relations between various alternative formalisms which have been used in the combinatorial study of the planar Ising model: dimers and Grassmann variables, spin and disorder operators, and, more recently, s-holomorphic observables. In addition, we point out that these formulas can be extended to the double-Ising model, de�fined as a pointwise product of two Ising spin con�gurations on the same discrete domain, coupled along the boundary.
Publié le :
DOI : 10.4171/aihpd/42
Mots-clés : Ising model, Kac–Ward matrix, spin correlations, fermionic observables, discrete holomorphic functions, spin structures, double-Ising model
@article{AIHPD_2017__4_3_309_0, author = {Chelkak, Dmitry and Cimasoni, David and Kassel, Adrien}, title = {Revisiting the combinatorics of the {2D} {Ising} model}, journal = {Annales de l{\textquoteright}Institut Henri Poincar\'e D}, pages = {309--385}, volume = {4}, number = {3}, year = {2017}, doi = {10.4171/aihpd/42}, mrnumber = {3713019}, zbl = {1380.82017}, language = {en}, url = {http://archive.numdam.org/articles/10.4171/aihpd/42/} }
TY - JOUR AU - Chelkak, Dmitry AU - Cimasoni, David AU - Kassel, Adrien TI - Revisiting the combinatorics of the 2D Ising model JO - Annales de l’Institut Henri Poincaré D PY - 2017 SP - 309 EP - 385 VL - 4 IS - 3 UR - http://archive.numdam.org/articles/10.4171/aihpd/42/ DO - 10.4171/aihpd/42 LA - en ID - AIHPD_2017__4_3_309_0 ER -
%0 Journal Article %A Chelkak, Dmitry %A Cimasoni, David %A Kassel, Adrien %T Revisiting the combinatorics of the 2D Ising model %J Annales de l’Institut Henri Poincaré D %D 2017 %P 309-385 %V 4 %N 3 %U http://archive.numdam.org/articles/10.4171/aihpd/42/ %R 10.4171/aihpd/42 %G en %F AIHPD_2017__4_3_309_0
Chelkak, Dmitry; Cimasoni, David; Kassel, Adrien. Revisiting the combinatorics of the 2D Ising model. Annales de l’Institut Henri Poincaré D, Tome 4 (2017) no. 3, pp. 309-385. doi : 10.4171/aihpd/42. http://archive.numdam.org/articles/10.4171/aihpd/42/
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