Hyun C. Lee

Dynamical mean-field theory of the Hubbard-Holstein model at half filling: Zero temperature metal-insulator and insulator-insulator transitions

We study the Hubbard-Holstein model which includes both the electron-electron and electron-phonon interactions, characterized by

Fano resonance in Raman scattering of graphene

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A Systematic Approach to Ultrasonic Pattern Recognition for Real-Time Intelligent Flaw Classification in Weldments

and

Model for the inverse isotope effect of FeAs-based superconductors in the π -phase-shifted pairing state

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Electronic Raman scattering of s+g-wave superconductors: Implications for borocarbide superconductors

, respectively. The model is solved with

Effect of Hund coupling in the one-dimensional SU(4) Hubbard model

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Electron correlation and Jahn-Teller interaction in manganese oxides

and

Collective excitation of quantum wires and effect of spin-orbit coupling in the presence of a magnetic field along the wire

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Bosonization theory of excitons in one-dimensional narrow-gap semiconductors

on an equal footing in the infinite dimensions by employing the dynamical mean-field theory in combination with Wilsons numerical renormalization group. A zero temperature phase diagram of symmetry unbroken states at half filling is mapped out which exhibits the interplay between the two kinds of interactions and combines the two separately studied interaction-driven metal-insulator transitions of the Hubbard and Holstein models within a single frame. The ground state is metallic when both

Path integral approach to the Anderson-Holstein model

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