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cond-mat.stat-mech1998
Magnetization bound for classical spin models on graphs
Raffaella Burioni, Davide Cassi, Alessandro Vezzani
In this paper we prove the existence of phase transitions at finite temperature for O(n) classical ferromagnetic spin models on infrared finite graphs. Infrared finite graphs are i…
cond-mat.stat-mech1997
Cutting-Decimation Renormalization for diffusive and vibrational dynamics on fractals
Raffaella Burioni, Davide Cassi, Sofia Regina
Recently, we pointed out that on a class on non exactly decimable fractals two different parameters are required to describe diffusive and vibrational dynamics. This phenomenon we…