Investigation of the two-particle-self-consistent theory for the single-impurity Anderson model and an extension to the case of strong correlation
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概要
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Copyright(c)2000 The Physical Society of JapanThe two-particle-self-consistent theory is applied to the single-impurity Anderson model. It is found that it cannot reproduce the small energy scale in the strong correlation limit. A modified scheme to overcome this difficulty is proposed by introducing an appropriate vertex correction explicitly. Using the same vertex correction, the self-energy is investigated, and it is found that under certain assumptions it reproduces the result of the modified perturbation theory which interpolates the weak and the strong correlation limits.
- 社団法人日本物理学会の論文
- 2000-12-15
著者
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Saso Tetsuro
Department Of Physics Faculty Of Science Saitama University
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Saso Tetsuro
Department Of Physics Faculty Of Sciences Saitama University
関連論文
- Introduction : Chapter 1. Introduction
- Localization and Interaction in One-Dimensional Electron Systems
- Impurity-Induced Soliton Formation in Quasi-One Dimensional Superconducting State
- Self-Consistent Perturbational Study of Insulator-to-Metal Transition in Kondo Insulators due to Strong Magnetic Field
- Theory of Valence-Fluctuating Tm Impurities.I
- Calculation of Optical Conductivity of YbB_ using Realistic Tight-binding Model
- Specific Heat-Coefficient of YbAl_3 Studied by Combined Nearly Free Electron Conduction Band Hybridized with Localized f Electrons with Correlation Effect
- Absence of Hybridization Gap in Heavy Electron Systems and Analysis of YbAl_3 in Terms of Nearly Free Electron Conduction Band(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Effects of Strong Correlation and Magnetic Field on Kondo Insulators
- Calculation of Optical Conductivity, Resistivity and Thermopower of Filled Skutterudite CeRu_4Sb_ based on a Realistic Tight-binding Model with Strong Correlation
- Modified Perturbation Theory for Strongly Correlated Electron Systems
- A Unfied Theory of Dynamical Mean Field and Spin Fluctuations
- Modified Perturbation Theory Applied to Kondo-Type Transport through a Quantum Dot under a Magnetic Field
- Magnetic Field Effects on Transport Properties of a Quantum Dot Studied by Modified Perturbation Theory
- Optical conductivity of Ce-based filled skutterudites
- 1/N and Quantum Monte Carlo Studies of a Magnetic Impurity in an Insulator with a Small Gap
- Investigation of the two-particle-self-consistent theory for the single-impurity Anderson model and an extension to the case of strong correlation
- Anomalous Metal-Insulator Transition in Filled Skutterudite CeOs_4Sb_
- Quantum Monte Carlo Simulation of One-Dimensional Periodic Anderson Model
- Scattering Mechanisms in Heavily Doped Semiconductors. II. Effect of Mass Anisotropy and Multiple Scattering
- Numerical Simulation of the Dynamical Conductivity of One-Dimensional Disordered Systems by MacKinnon's Method
- Role of Commensurability Energy in Impurity Pinning of One-Dimensional Charge Density Waves
- Quantum Fluctuation of Pinned Charge Density Waves vs Superconducting Fluctuation in One-Dimensional Conductors
- Quantum Monte Carlo Study on Impurity Pinning in One-Dimensional Interacting Electron Systems-Competition between Charge Density and Superconducting Fluctuations-
- The Impurity Pinning of a Spin-Density Wave in One-Dimensional Interacting Electron Systems
- Formation Mechanism of Hybridization Gap in Kondo Insulators based on a Realistic Band Model and Application to YbB_
- Scattering Mechanism in Heavily Doped Semiconductors. I. Maxima in Resistivity and Hall Coefficient
- Magnetic Impurity in Insulators with Small Energy Gap
- Variational and Self-Consistent Perturbational Theories for Generalized Kondo Systems
- Magnetic-Field-induced Antiferromagnetism in Two-dimensional Hubbard Model : Analysis of CeRhIn_5(Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)
- Magnetization Curve of the Infinite-Dimensional Hubbard Model
- Variational Theory for Two-Impurity Anderson Model : Condensed Matter and Statistical Physics
- Correlation Effects on Optical Conductivity of FeSi
- Magnetic field induced antiferromagnetism in two-dimensional Hubbard model: Analysis of CeRhIn5