Matches in SemOpenAlex for { <https://semopenalex.org/work/W2045862463> ?p ?o ?g. }
- W2045862463 abstract "We present a general frame to extend functional renormalization group (fRG) based computational schemes by using an exactly solvable interacting reference problem as starting point for the RG flow. The systematic expansion around this solution accounts for a nonperturbative inclusion of correlations. Introducing auxiliary fermionic fields by means of a Hubbard-Stratonovich transformation, we derive the flow equations for the auxiliary fields and determine the relation to the conventional weak-coupling truncation of the hierarchy of flow equations. As a specific example we consider the dynamical mean field theory (DMFT) solution as reference system, and discuss the relation to the recently introduced ${mathrm{DMF}}^{2}mathrm{RG}$ and the dual-fermion formalism." @default.
- W2045862463 created "2016-06-24" @default.
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- W2045862463 date "2015-01-16" @default.
- W2045862463 modified "2023-10-14" @default.
- W2045862463 title "Correlated starting points for the functional renormalization group" @default.
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- W2045862463 doi "https://doi.org/10.1103/physrevb.91.045120" @default.
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