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The Langevin method and Hubbard-like models

โœ Scribed by Mark Gross; Herbert Hamber


Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
127 KB
Volume
162-164
Category
Article
ISSN
0921-4534

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โœ S. Krivenko; A. Avella; F. Mancini; N. Plakida ๐Ÿ“‚ Article ๐Ÿ“… 2005 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 202 KB

We study the self-energy corrections to a 2-pole projection scheme for the Hubbard model by means of the self-consistent Born approximation, truncated to the first order, within the composite operator method. The bosonic Green's functions (spin and charge propagators), appearing in the mode-coupling