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 |
Externí odkaz: |
|