The time-dependent Gutzwiller theory for multi-band Hubbard models

Abstract

We formulate a multi-band generalisation of the time-dependent Gutzwiller theory. This approach allows for the calculation of general two-particle response functions, which are crucial for an understanding of various experiments in solid-state physics. As a first application, we study the momentum- and frequency-resolved magnetic susceptibility in a two-band Hubbard model. Like in the underlying ground-state approaches we find significant differences between the results of our method and those from a time-dependent Hartree-Fock approximation.

42 pages, 4 figures

References in corpus (15)

• Time-Dependent Mean Field Theory for Quench Dynamics in correlated electron systems
• Rotationally-invariant slave-boson formalism and momentum dependence of the quasiparticle weight
• Pseudogap opening and formation of Fermi arcs as an orbital-selective Mott transition in momentum space
• Quantum Quenches in the Hubbard Model: Time Dependent Mean Field Theory and The Role of Quantum Fluctuations
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• Gutzwiller density functional theory for correlated electron systems
• Equivalence of Gutzwiller and slave-boson mean-field theories for multi-band Hubbard models
• Surface dead layer for quasiparticles near a Mott transition
• Theory of antibound states in partially filled narrow band systems
• Rotationally-invariant slave-bosons for Strongly Correlated Superconductors
• Correlation effects on the doped triangular lattice in view of the physics of sodium-rich Na${}_x$CoO${}_2$
• Antiferromagnetic order in multi-band Hubbard models for iron-pnictides
• Time-Dependent Gutzwiller Theory for Multiband Hubbard Models
• Time-dependent Gutzwiller theory of pairing fluctuations in the Hubbard model
• Hybridisation in two-band Hubbard models with different bandwidths

Cited by in corpus (9)

• Variational study of Fermi-surface deformations in Hubbard models
• Hund's coupling driven photo-carrier relaxation in the two-band Mott insulator
• Quench dynamics of Rydberg-dressed bosons on two-dimensional square lattices
• Comparison of two approaches for the treatment of Gutzwiller variational wave functions
• Numerical minimisation of Gutzwiller energy functionals
• Quantum fluctuations beyond the Gutzwiller approximation
• Exact response functions within the time-dependent Gutzwiller approach
• Extending the Gutzwiller approximation to intersite interactions
• Efficient slave-boson approach for multiorbital two-particle response functions and superconductivity