Abstract
We study automorphisms of the Clifford algebra which map the set of quasi-free states onto itself. We show that they are quasi-free if the one-particle space is infinite dimensional, and give counter examples in finite dimensions.
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Communicated by H. Araki
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Wolfe, J.C. Free states and automorphisms of the Clifford algebra. Commun.Math. Phys. 45, 53–58 (1975). https://doi.org/10.1007/BF01609865
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DOI: https://doi.org/10.1007/BF01609865