Abstract
Using the uniqueness of the K.M.S. automorphism, we investigate the set of automorphisms that commutes with it. The results are applied to gauge invariant quasi-free states of a fermion system.
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Attaché de Recherche, C.N.R.S.
On leave of absence from the Groningen University, the Netherlands.
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Sirugue, M., Winnink, M. Constraints imposed upon a state of a system that satisfies the K.M.S. boundary condition. Commun.Math. Phys. 19, 161–168 (1970). https://doi.org/10.1007/BF01646632
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DOI: https://doi.org/10.1007/BF01646632