Dimer statistics on the Klein bottle |
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Authors: | Fuliang Lu Lianzhu Zhang Fenggen Lin |
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Institution: | School of Mathematical Sciences, Xiamen University, Xiamen 361005, PR China |
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Abstract: | The problem of enumerating close-packed dimers, or perfect matchings, on a quadratic lattice embedded on the Klein bottle is considered. Thomassen C. Thomassen, Tilings of the torus and the Klein Bottle and vertex-transitive graphs on a fixed surface, Trans. Amer. Math. Soc. 323(2) (1991) 605-635] characterized that there are six quadrilateral lattices embedded on the Klein bottle. Lu and Wu W. T. Lu and F. Y. Wu, Close-packed dimers on nonorientable surfaces, Phys. Lett. A 293 (2002) 235-246] had obtained a expression for the number of close-packed dimers on one of them. In this paper we investigate four other embeddings and obtain explicit expressions of the numbers of close-packed dimers and free energy per dimer by enumerating Pfaffians. |
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Keywords: | Dimer Pfaffian Quadratic lattice Klein bottle |
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