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Two-loop functional renormalization group approach to the one- and two-dimensional Hubbard model

✍ Scribed by Katanin, A. A.


Book ID
120048063
Publisher
The American Physical Society
Year
2009
Tongue
English
Weight
412 KB
Volume
79
Category
Article
ISSN
1098-0121

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Functional renormalization group beyond
✍ Hirokazu Takashima; Ryotaro Arita; Kazuhiko Kuroki; Hideo Aoki πŸ“‚ Article πŸ“… 2010 πŸ› Elsevier Science 🌐 English βš– 240 KB

While the functional renormalization group is a powerful theoretical method, the static approximation has been usually adopted in which the Matsubara frequency dependence of vertex functions is ignored. We propose a formalism beyond the static approximation with an efficient parameterization in the