The physics of correlated insulators, metals, and superconductors

0482397 - FZÚ 2018 RIV DE eng M - Část monografie knihy
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
Grant CEP: GA ČR GA15-14259S
Institucionální podpora: RVO:68378271
Klíčová slova: disordered electrons * green functions * diagrammatic expansion * transport properties * Ward identities
Obor OECD: 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.

Trvalý link: http://hdl.handle.net/11104/0277796