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PROOF OF THE VARIATIONAL PRINCIPLE FOR A PAIR HAMILTONIAN BOSON MODEL
Reviews in Mathematical Physics
We give a two parameter variational formula for the grand-canonical pressure of the Pair Boson Hamiltonian model. By using the Approximating Hamiltonian Method we provide a rigorous proof of this variational principle.doi:10.1142/s0129055x07002924 fatcat:l5doqar7sbawbfro4wzash3lom