Dimers and the Critical Ising Model on Lattices of genus>1

Details Dimers and the Critical Ising Model on Lattices of genus>1 Dimers and the Critical Ising Model on Lattices of genus>1

2001-09-21

arxiv.org/abs/hep-th/0109167v2

Nucl.Phys.B623:439-473,2002

Physics

High Energy Physics

High Energy Physics - Theory

44 pages, eps figures included; typos corrected, figure and comments added to section 5

Scientific paper

10.1016/S0550-3213(01)00611-3

We study the partition function of both Close-Packed Dimers and the Critical Ising Model on a square lattice embedded on a genus two surface. Using numerical and analytical methods we show that the determinants of the Kasteleyn adjacency matrices have a dependence on the boundary conditions that, for large lattice size, can be expressed in terms of genus two theta functions. The period matrix characterizing the continuum limit of the lattice is computed using a discrete holomorphic structure. These results relate in a direct way the lattice combinatorics with conformal field theory, providing new insight to the lattice regularization of conformal field theories on higher genus Riemann Surfaces.

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