Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102460
Title: From infinite to two dimensions through the functional renormalization group
Authors: Taranto, C.
Andergassen, S.
Bauer, J.
Held, K.
Katanin, A.
Metzner, W.
Rohringer, G.
Toschi, A.
Issue Date: 2014
Publisher: American Physical Society
Citation: From infinite to two dimensions through the functional renormalization group / C. Taranto, S. Andergassen, J. Bauer, et al. — DOI 10.1103/PhysRevLett.112.196402 // Physical Review Letters. — 2014. — Vol. 112. — Iss. 19. — 196402.
Abstract: We present a novel scheme for an unbiased, nonperturbative treatment of strongly correlated fermions. The proposed approach combines two of the most successful many-body methods, the dynamical mean field theory and the functional renormalization group. Physically, this allows for a systematic inclusion of nonlocal correlations via the functional renormalization group flow equations, after the local correlations are taken into account nonperturbatively by the dynamical mean field theory. To demonstrate the feasibility of the approach, we present numerical results for the two-dimensional Hubbard model at half filling. © 2014 American Physical Society.
Keywords: MEAN FIELD THEORY
DYNAMICAL MEAN-FIELD THEORY
FUNCTIONAL RENORMALIZATION GROUP
LOCAL CORRELATIONS
NONLOCAL CORRELATIONS
NONPERTURBATIVE TREATMENT
NUMERICAL RESULTS
STRONGLY CORRELATED FERMIONS
TWO-DIMENSION
STATISTICAL MECHANICS
URI: http://hdl.handle.net/10995/102460
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 84901044839
PURE ID: 388013
bc64214c-9d6b-4403-b5ba-195f936341f2
ISSN: 319007
DOI: 10.1103/PhysRevLett.112.196402
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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