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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Communications in mathematical physics 70 (1979), S. 193-212 
    ISSN: 1432-0916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract We consider clusteringG-invariant states of aC*-algebraU endowed with an action of a locally compact abelian groupG. Denoting as usual byF AB,G AB, the corresponding two-point functions, we give criteria for the fulfillment of the KMS condition (w.r.t. some one-parameter subgroup ofG) based upon the existence of a closable mapT such thatTF AB =G AB for allA,B∈U. Closability is either inL ∞(G),B(G), orC ∞(G), according to clustering assumptions. Our criteria originate from the combination of duality results for the groupG (phrased in terms of functions systems), with density results for the two-point functions.
    Type of Medium: Electronic Resource
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