Time-Dependent Gutzwiller Theory for Multiband Hubbard Models

Abstract

Based on the variational Gutzwiller theory, we present a method for the computation of response functions for multiband Hubbard models with general local Coulomb interactions. The improvement over the conventional random-phase approximation is exemplified for an infinite-dimensional two-band Hubbard model where the incorporation of the local multiplet-structure leads to a much larger sensitivity of ferromagnetism on the Hund coupling. Our method can be implemented into LDA+Gutzwiller schemes and will therefore be an important tool for the computation of response functions for strongly correlated materials.

4 pages, 3 figures

References in corpus (7)

• Time-Dependent Mean Field Theory for Quench Dynamics in correlated electron systems
• Gutzwiller density functional theory for correlated electron systems
• LDA+Gutzwiller Method for Correlated Electron Systems
• Phase Diagram of Na${}_x$CoO${}_2$ Studied by Gutzwiller Density Functional Theory
• Theory of antibound states in partially filled narrow band systems
• Antiferromagnetic order in multi-band Hubbard models for iron-pnictides
• Quantum Lifshitz point in the infinite dimensional Hubbard model

Cited by in corpus (14)

• Variational study of Fermi-surface deformations in Hubbard models
• Hund's coupling driven photo-carrier relaxation in the two-band Mott insulator
• Photo-induced nonequilibrium states in Mott insulators
• Linear-Response Dynamics from the Time-Dependent Gutzwiller Approximation
• Numerical minimisation of Gutzwiller energy functionals
• Quantum fluctuations beyond the Gutzwiller approximation
• The time-dependent Gutzwiller theory for multi-band Hubbard models
• Time-dependent ghost-Gutzwiller non-equilibrium dynamics
• Extended dynamic Mott-transition in the two-band Hubbard model out of equilibrium
• Versatile Approach to the Spin Dynamics in Correlated Electron Systems
• Exact response functions within the time-dependent Gutzwiller approach
• Charge self-consistent density functional theory plus ghost rotationally-invariant slave-boson theory for correlated materials
• Extending the Gutzwiller approximation to intersite interactions
• Efficient slave-boson approach for multiorbital two-particle response functions and superconductivity