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Correlated finite temperature mean field approximations

โœ Scribed by H.G. Miller; R.M. Quick; R.R. Rossignoli; G.D. Yen


Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
544 KB
Volume
570
Category
Article
ISSN
0375-9474

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The Gaussian Approximation About an Arbi
โœ G. Puddu ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 256 KB

The explicit expression for the Gaussian approximation about any possible mean-field of a given Hamiltonian is derived using functional integration techniques that generalizes the Hubbard-Stratonovich transformation. In the limit of weak two-body potentials it is shown that the Gaussian approximatio