Abstract
The generating functional of the cyclic representation of the canonical commutation relations for the equilibrium state of the free Boson gas is calculated, using a method due to Kac, as the thermodynamic limit of the grand canonical generating functional. The relation to the work of Araki and Woods is discussed.
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Communicated by G. Gallavotti
We are deeply indebted to Professor M. Kac for showing us his derivation of the London-Placzek formula before publication. We are grateful to Dr. E. B. Davies for many stimulating discussions.
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Lewis, J.T., Pulè, J.V. The equilibrium states of the free Boson gas. Commun.Math. Phys. 36, 1–18 (1974). https://doi.org/10.1007/BF01646022
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DOI: https://doi.org/10.1007/BF01646022