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math-ph2026
New convergence bound for the cluster expansion in canonical ensemble
Giuseppe Scola
We perform a cluster expansion in the canonical ensemble with periodic boundary conditions, introducing a new choice of polymer activities that differs from the standard ones. This…
math-ph2020★ 1 cited
Cluster expansion for the Ising model in the canonical ensemble
Giuseppe Scola
We show the validity of the cluster expansion in the canonical ensemble for the Ising model. We compare the lower bound of its radius of convergence with the one computed by the vi…