On the equivalence of theKMS condition and the variational principle for quantum lattice systems
Abstract
For quantum spin systems on a lattice of an arbitrary dimension, theKMS condition and the variational principle are shown to be equivalent at an arbitrary temperature for translationally invariant states.
- Publication:
-
Communications in Mathematical Physics
- Pub Date:
- March 1974
- DOI:
- 10.1007/BF01651545
- Bibcode:
- 1974CMaPh..38....1A
- Keywords:
-
- Neural Network;
- Statistical Physic;
- Complex System;
- Nonlinear Dynamics;
- Variational Principle