Statistical Mechanics of Quantum Spin Systems. Ill


In the algebraic formulation the thermodynamic pressure, or free energy, of a spin system is a convex continuous function P defined on a Banach space ~3 of translationally invariant interactions. We prove that each tangent functional to the graph of P defines a set of translationally invariant thermodynamic expectation values, l~Iore precisely each tangent… (More)


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@inproceedings{Lanford2005StatisticalMO, title={Statistical Mechanics of Quantum Spin Systems. Ill}, author={Oscar E. Lanford}, year={2005} }