Green's Functions in Quantum Physics:
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Bibliographische Detailangaben
1. Verfasser: Economou, Eleftherios N. 1940- (VerfasserIn)
Format: Elektronisch E-Book
Sprache:English
Veröffentlicht: Berlin, Heidelberg Springer Berlin Heidelberg 1983
Ausgabe:Second Corrected and Updated Edition
Schriftenreihe:Springer Series in Solid-State Sciences 7
Schlagworte:
Online-Zugang:Volltext
Beschreibung:In this edition the second and main part of the book has been considerably expanded as to cover important applications of the formalism. In Chap.5 a section was added outlining the extensive role of the tight­binding (or equivalently the linear combination of atomic-like orbitals) approach to many branches of solid-state physics. Some additional information (including a table of numerical values) regarding square and cubic lattice Green's functions were incorporated. In Chap.6 the difficult subjects of superconductivity and the Kondo effect are examined by employing an appealingly simple connection to the question of the existence of a bound state in a very shallow potential well. The existence of such a bound state depends entirely on the form of the unperturbed density of states near the end of the spectrum: if the density of states blows up there is always at least one bound state. If the density of states approaches zero continuously, a critical depth (and/or width) of the well must be reached in order to have a bound state. The borderline case of a finite discontinuity (which is very important to superconductivity and the Kondo effect) always produces a bound state with an exponentially small binding energy
Beschreibung:1 Online-Ressource (XIV, 316 p)
ISBN:9783662023693
9783540122661
ISSN:0171-1873
DOI:10.1007/978-3-662-02369-3

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