Existence of the limiting mean field dynamics in general equilibrium representations

Autor: Eberhard Duffner
Rok vydání: 1985
Předmět:
Zdroj: Physica A: Statistical Mechanics and its Applications. 133:187-212
ISSN: 0378-4371
DOI: 10.1016/0378-4371(85)90063-9
Popis: The existence of the limiting finite time transformations is proved for a class of discrete mean field models in all states, which are asymptotically permutation invariant. To this end detailed approximation and analyticity properties of the complex many-time Green's functions are worked out. For a rather general class of grand canonical equilibrium states the limiting time transformations are shown to constitute a W∗-automorphism group in the corresponding GNS-von Neumann algebra in spite of the extremely long-range interaction potential and in spite of the center not necessarily being point-wise invariant. Approximation properties for the finite temperature Heisenberg generators are obtained by complex differentiation.
Databáze: OpenAIRE