Area versus Length Distribution for Closed Random Walks

Details Area versus Length Distribution for Closed Random Walks Area versus Length Distribution for Closed Random Walks

2002-12-23

arxiv.org/abs/cond-mat/0212564v1

J.Phys.A36:1539-1552,2003

Physics

Condensed Matter

Statistical Mechanics

17 pages

Scientific paper

10.1088/0305-4470/36/6/301

Using a connection between the $q$-oscillator algebra and the coefficients of the high temperature expansion of the frustrated Gaussian spin model, we derive an exact formula for the number of closed random walks of given length and area, on a hypercubic lattice, in the limit of infinite number of dimensions. The formula is investigated in detail, and asymptotic behaviours are evaluated. The area distribution in the limit of long loops is computed. As a byproduct, we obtain also an infinite set of new, nontrivial identities.

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