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5 papers · 1 filter
Potts model on recursive lattices: some new exact results
Pedro D. Alvarez, Fabrizio Canfora, Sebastian A. Reyes +1
We compute the partition function of the Potts model with arbitrary values of and temperature on some strip lattices. We consider strips of width , for three different l…
Duality and Fisher zeros in the 2D Potts model on square lattice
Marco Astorino, Fabrizio Canfora
A phenomenological approach to the ferromagnetic two dimensional Potts model on square lattice is proposed. Our goal is to present a simple functional form that obeys the known pro…
Fisher zeros in the Kallen-Lehmann approach to 3D Ising model
Marco Astorino, Fabrizio Canfora, Gaston Giribet
The distribution of the Fisher zeros in the Kallen-Lehmann approach to three-dimensional Ising model is studied. It is argued that the presence of a non-trivial angle (a cusp) in t…
Minimal duality breaking in the Kallen-Lehman approach to 3D Ising model: a numerical test
Marco Astorino, Fabrizio Canfora, Cristian Martinez +1
A Kallen-Lehman approach to 3D Ising model is analyzed numerically both at low and high temperature. It is shown that, even assuming a minimal duality breaking, one can fix three p…
Kallen-Lehman approach to 3D Ising model
Fabrizio Canfora
A "Kallen-Lehman" approach to Ising model, inspired by quantum field theory a la Regge, is proposed. The analogy with the Kallen-Lehman representation leads to a formula for the fr…