Summary
Properties of a statistical ensemble ofN modes of an electromagnetic field in a cavity are discussed within the framework of the information-theoretical approach to statistical physics. Density operator maximizing the Von Neumann entropy for the case that all first- and second-order correlation functions have to satisfy, and the conditions of the thermodynamical regularity, are determined. Finally, the characteristic function corresponding to the estimated density operator is determined which allows for evaluating all higher-order correlations.
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Czajkowski, G., Kossakowski, A. Information-theoretical estimation of higher-order correlation functions of the electromagnetic field in a cavity. Nuov Cim B 109, 1235–1245 (1994). https://doi.org/10.1007/BF02722835
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DOI: https://doi.org/10.1007/BF02722835