Extended mean-field treatments and information theory
- 1 August 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 42 (4) , 2065-2075
- https://doi.org/10.1103/physreva.42.2065
Abstract
An extended mean-field approximation for statistical operators is derived within the context of information theory. The ensuing scheme is applied to (many) boson mean-field approaches within a completely general statistical framework. Numerical examples are given within the context of the finite-temperature anharmonic oscillator problem. Fluctuations are also discussed.Keywords
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