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A simple resummation method for cluster expansions

Zahradnik, M (Charles )
Wednesday 23 January 2008, 14:00-14:30

Seminar Room 1, Newton Institute


I will present a simple and (possibly) new method of organizing the (+/- cancellations in the) cluster expansions of polymer models, hard repulsion case. The method is suitable for models where polymers are "cycles" or closed paths in a lattice (Kramers-Wannier representation of the Ising model, perturbations of massless Gaussians) also in several cases where expansions are only nonabsolutely summable.


[pdf ]




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