A Statistical Model of Current Loops and Magnetic Monopoles
@article{Ayyer2013ASM, title={A Statistical Model of Current Loops and Magnetic Monopoles}, author={Arvind Ayyer}, journal={Mathematical Physics, Analysis and Geometry}, year={2013}, volume={18}, pages={1-19} }
We formulate a natural model of loops and isolated vertices for arbitrary planar graphs, which we call the monopole-dimer model. We show that the partition function of this model can be expressed as a determinant. We then extend the method of Kasteleyn and Temperley-Fisher to calculate the partition function exactly in the case of rectangular grids. This partition function turns out to be a square of a polynomial with positive integer coefficients when the grid lengths are even. Finally, we…
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