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The physics of correlated insulators, metals, and superconductors
- 1.0482397 - FZÚ 2018 RIV DE eng M - Monography Chapter
Janiš, Václav
Dynamical mean-field theory of disordered electrons: coherent potential approximation and beyond.
The physics of correlated insulators, metals, and superconductors. Jülich: Forschungszentrum Jülich, 2017 - (Pavarini, E.; Koch, R.; Scalettar, R.; Martin, R.), s. 1-29. ISBN 978-3-95806-224-5
R&D Projects: GA ČR GA15-14259S
Institutional support: RVO:68378271
Keywords : disordered electrons * green functions * diagrammatic expansion * transport properties * Ward identities
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
The concept of the Coherent Potential for disordered electron systems is reviewed in view of the modern Dynamical Mean Field Theory. First, the original quantum mechanical approach is summarized. Then many-body construction of the generating functional for the Coherent Potential Approximation as the limit to infinite lattice dimensions is presented. Finally, transport properties and problems with extensions of the local mean-field approximations are reviewed.
Permanent Link: http://hdl.handle.net/11104/0277796
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