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Trace states and KMS states for approximately inner dynamical one-parameter groups of -automorphisms
Journal article   Peer reviewed

Trace states and KMS states for approximately inner dynamical one-parameter groups of -automorphisms

Communications in mathematical physics, Vol.53(no. 2), pp.135-142
1977
DOI: 10.1007/BF01609127

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Abstract

The usual definition of approximately inner one-parameter groups of *-automorphisms of C*-algebras (approximately inner dynamical one-parameter groups) contains a slight asymmetry. When this asymmetry is "corrected", we show that if an approximately inner dynamical one-parameter group has KMS states for one value of inverse temperature β=1/kT, then it has KMS states for all values of β. By the Powers-Sakai Theorem it is enough to show that there is a trace state. We obtain a trace state as a limit of a sequence of "vector states" with respect to a given KMS state and thus solve a problem raised in [6]. © 1977 Springer-Verlag.
46L05 81.46

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