Equilibrium statistical mechanics of bipartite spin systems

  title={Equilibrium statistical mechanics of bipartite spin systems},
  author={Adriano Barra and Giuseppe Genovese and Francesco Guerra},
  journal={Journal of Physics A},
The aim of this paper is to give an extensive treatment of bipartite mean field spin systems, pure and disordered. At first, bipartite ferromagnets are investigated, and an explicit expression for the free energy is achieved through a new minimax variational principle. Then, via the Hamilton?Jacobi technique, the same structure of the free energy is obtained together with the existence of its thermodynamic limit and the minimax principle is connected to a standard max one. The same is… Expand
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