PMID- 28949722
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20180205
LR  - 20180205
IS  - 1079-7114 (Electronic)
IS  - 0031-9007 (Linking)
VI  - 119
IP  - 5
DP  - 2017 Aug 4
TI  - Breakdown of Traditional Many-Body Theories for Correlated Electrons.
PG  - 056402
LID - 10.1103/PhysRevLett.119.056402 [doi]
AB  - Starting from the (Hubbard) model of an atom, we demonstrate that the uniqueness 
      of the mapping from the interacting to the noninteracting Green function, 
      G-->G_0, is strongly violated, by providing numerous explicit examples of 
      different G_0 leading to the same physical G. We argue that there are indeed 
      infinitely many such G_0, with numerous crossings with the physical solution. 
      We show that this rich functional structure is directly related to the divergence 
      of certain classes of (irreducible vertex) diagrams, with important consequences 
      for traditional many-body physics based on diagrammatic expansions. Physically, 
      we ascribe the onset of these highly nonperturbative manifestations to the 
      progressive suppression of the charge susceptibility induced by the formation of 
      local magnetic moments and/or resonating valence bond (RVB) states in strongly 
      correlated electron systems.
FAU - Gunnarsson, O
AU  - Gunnarsson O
AD  - Max-Planck-Institut fur Festkorperforschung, Heisenbergstrasse 1, D-70569 
      Stuttgart, Germany.
FAU - Rohringer, G
AU  - Rohringer G
AD  - Russian Quantum Center, Novaya street, 100, Skolkovo, Moscow region 143025, 
      Russia.
FAU - Schafer, T
AU  - Schafer T
AD  - Institute of solid state physics, Technische Universitat Wien, 1040 Vienna, 
      Austria.
FAU - Sangiovanni, G
AU  - Sangiovanni G
AD  - Institute of Physics and Astrophysics, University of Wurzburg, Wurzburg 97074, 
      Germany.
FAU - Toschi, A
AU  - Toschi A
AD  - Institute of solid state physics, Technische Universitat Wien, 1040 Vienna, 
      Austria.
LA  - eng
PT  - Journal Article
DEP - 20170804
PL  - United States
TA  - Phys Rev Lett
JT  - Physical review letters
JID - 0401141
EDAT- 2017/09/28 06:00
MHDA- 2017/09/28 06:01
CRDT- 2017/09/27 06:00
PHST- 2017/03/31 00:00 [received]
PHST- 2017/09/27 06:00 [entrez]
PHST- 2017/09/28 06:00 [pubmed]
PHST- 2017/09/28 06:01 [medline]
AID - 10.1103/PhysRevLett.119.056402 [doi]
PST - ppublish
SO  - Phys Rev Lett. 2017 Aug 4;119(5):056402. doi: 10.1103/PhysRevLett.119.056402. 
      Epub 2017 Aug 4.