2 papers
physics.hist-ph2010
Breaking the symmetry. The first steps of a new way of thinking
Ignazio A. Sardella
The concept of Spontaneous Symmetry Breaking (SSB) represents a real breakthrough for present description of fundamental interactions by means of gauge theories. Although the under…
cond-mat.stat-mech1997
Variational method and duality in the 2D square Potts model
L. Angelini, M. Pellicoro, I. Sardella +1
The ferromagnetic q-state Potts model on a square lattice is analyzed, for q>4, through an elaborate version of the operatorial variational method. In the variational approach prop…