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Springer series in solid-state sciences

Green’s Functions in Quantum Physics

Eleftherios N. Economou

Published Jan 1, 1983• 792 citations
Publisher
DOI
10.1007/978-3-662-02369-3

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Architectural Multiplicity and Physical Representations From Green-Function Architectures to Quantum Theory and Statistical Physics

Borros Arneth

The first paper of this series introduced Green-Function Architectures as primitive mathematical objects and established an axiomatic framework for a restricted class of Green functions. The second paper developed a classification theory based on architectural invariants, equivalence classes, and morphisms. The purpose of the present paper is to investigate how Green-Function Architectures may be represented within established physical theories. Rather than modifying the equations of quantum mechanics, quantum field theory, or statistical physics, the present work studies representations of Green-Function Architectures in these existing mathematical frameworks. The central concept introduced is Architectural Multiplicity, an invariant intended to characterize structural complexity within an architectural equivalence class. The paper investigates how such invariants may be related to Green functions, spectra, statistical ensembles, and Hilbert-space representations. The emphasis is on mathematical representation rather than physical reinterpretation. Several open questions concerning the uniqueness, completeness, and physical significance of Architectural Multiplicity are identified.

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Green's Function in Condensed Matter Physics

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Part I: Green's Functions in Mathematical Physics - Time-Independent Green's Functions / Time-dependent Green's Functions / Part II: One-Body Green's Functions - Physical Significance of One-Body Green's Functions / Green's Functions and Perturbation Theory / Green's Functions for Tight-Binding Hamiltonians / Single Impurity Scattering / Extension Theory for Lattice Green's Functions / Part III: Many-Body Green's Functions - Field Operators and Three Pictures / Definition and Properties of Many-Body Green's Functions / The Diagram Technique for Zero-Temperature Green's Functions / Definition and Properties of Matsubara Green's Functions / Diagram Technique for the Matsubara Green's Functions / Three Approximation Schemes of the Diagram Technique / Linear Response Theory / The Equation of Motion Technique for the Green's Functions / Magnetic Systems Described by Heisenberg Model / The Green's Functions for Boson Systems with Condensation / Superconductors with Weak Interaction Between Electrons / Nonequilibrium Green's Functions / Electronic Transport through a Mesoscopic Structure / Appendixes / Index.

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Green's Functions and Condensed Matter

GERALD RICKAYZEN

Green's functions, named for the mathematician who developed them in the 1830s, possess applications in many areas of physics. This volume presents the basic theoretical formulation, followed by specific applications, and is suitable for advanced undergraduates, graduate students, and professionals in the area of condensed matter physics.Beginning with a description of Green's function in classical physics from a modern point of view, the text progresses to the definition and properties of Green's functions in quantum physics. Most of the book explores applications, focusing on transport coef

•Jun 1, 1981•340 citations
The first paper of this series introduced Green-Function Architectures as primitive mathematical objects and established an axiomatic framework for a restricted class of Green functions. The second paper developed a classification theory based on architectural invariants, equivalence classes, and morphisms. The purpose of the present paper is to investigate how Green-Function Architectures may be represented within established physical theories. Rather than modifying the equations of quantum mechanics, quantum field theory, or statistical physics, the present work studies representations of Green-Function Architectures in these existing mathematical frameworks. The central concept introduced is Architectural Multiplicity, an invariant intended to characterize structural complexity within an architectural equivalence class. The paper investigates how such invariants may be related to Green functions, spectra, statistical ensembles, and Hilbert-space representations. The emphasis is on mathematical representation rather than physical reinterpretation. Several open questions concerning the uniqueness, completeness, and physical significance of Architectural Multiplicity are identified.
Part I: Green's Functions in Mathematical Physics - Time-Independent Green's Functions / Time-dependent Green's Functions / Part II: One-Body Green's Functions - Physical Significance of One-Body Green's Functions / Green's Functions and Perturbation Theory / Green's Functions for Tight-Binding Hamiltonians / Single Impurity Scattering / Extension Theory for Lattice Green's Functions / Part III: Many-Body Green's Functions - Field Operators and Three Pictures / Definition and Properties of Many-Body Green's Functions / The Diagram Technique for Zero-Temperature Green's Functions / Definition and Properties of Matsubara Green's Functions / Diagram Technique for the Matsubara Green's Functions / Three Approximation Schemes of the Diagram Technique / Linear Response Theory / The Equation of Motion Technique for the Green's Functions / Magnetic Systems Described by Heisenberg Model / The Green's Functions for Boson Systems with Condensation / Superconductors with Weak Interaction Between Electrons / Nonequilibrium Green's Functions / Electronic Transport through a Mesoscopic Structure / Appendixes / Index.
Green's functions, named for the mathematician who developed them in the 1830s, possess applications in many areas of physics. This volume presents the basic theoretical formulation, followed by specific applications, and is suitable for advanced undergraduates, graduate students, and professionals in the area of condensed matter physics.Beginning with a description of Green's function in classical physics from a modern point of view, the text progresses to the definition and properties of Green's functions in quantum physics. Most of the book explores applications, focusing on transport coef