Dynamically induced doublon repulsion in the Fermi-Hubbard model probed by a single-particle density of states

Abstract

We investigate the possibility to control dynamically the interactions between repulsively bound pairs of fermions (doublons) in correlated systems with off-resonant ac fields. We introduce an effective Hamiltonian that describes the physics of doublons up to the second-order in the high-frequency limit. It unveils that the doublon interaction, which is attractive in equilibrium, can be completely suppressed and then switched to repulsive by varying the power of the ac field. We show that the signature of the dynamical repulsion between doublons can be found in the single-fermion density of states averaged in time. Our results are further supported by nonequilibrium dynamical mean-field theory simulations for the half-filled Fermi-Hubbard model.

References in corpus (58)

• Many-Body Physics with Ultracold Gases
• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Angle-resolved photoemission spectroscopy of the cuprate superconductors
• Photonic Floquet Topological Insulators
• Experimental realisation of the topological Haldane model
• Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
• Floquet Topological Insulator in Semiconductor Quantum Wells
• Photovoltaic Hall effect in graphene
• Atomic quantum gases in periodically driven optical lattices
• Light-induced gauge fields for ultracold atoms
• Observation of Bose-Einstein Condensation of Molecules
• Light-induced anomalous Hall effect in graphene
• Nonequilibrium dynamical mean-field theory and its applications
• Dynamical control of matter-wave tunneling in periodic potentials
• Tunable gauge potential for neutral and spinless particles in driven lattices
• Repulsively bound atom pairs in an optical lattice
• Observation of Spatial Charge and Spin Correlations in the 2D Fermi-Hubbard Model
• Non-Abelian gauge fields and topological insulators in shaken optical lattices
• Ultrafast photo-magnetic recording in transparent medium
• Ultrafast transport of laser-excited spin polarized carriers in Au/Fe/MgO(001)
• Floquet Fractional Chern Insulator in Doped Graphene
• Optimal Hubbard models for materials with nonlocal Coulomb interactions: graphene, silicene and benzene
• Schrieffer-Wolff Transformation for Periodically Driven Systems: Strongly Correlated Systems with Artificial Gauge Fields
• Quantum interference between charge excitation paths in a solid state Mott insulator
• Ultracold Dipolar Gases in Optical Lattices
• Dynamical band flipping in fermionic lattice systems: An ac-field-driven change of the interaction from repulsive to attractive
• Enhancement and sign change of magnetic correlations in a driven quantum many-body system
• Thermalization of a pump-excited Mott insulator
• Metastable superfluidity of repulsive fermionic atoms in optical lattices
• Ultrafast doublon dynamics in photo-excited 1T-TaS${}_2$
• Photoinduced $\eta$ Pairing in the Hubbard Model
• Dynamics of Collapse of a Confined Bose Gas
• Photo-induced states in a Mott insulator
• Effective Hamiltonians for fastly driven many-body lattice systems
• Quantum liquid of repulsively bound pairs of particles in a lattice
• Equilibration rates and negative absolute temperatures for ultracold atoms in optical lattices
• Damping of Bloch oscillations in the Hubbard model
• Laser-induced topological transitions in phosphorene with inversion symmetry
• $\eta$--paired superconducting hidden phase in photodoped Mott insulators
• Ultra-fast photo-carrier relaxation in Mott insulators with short-range spin correlations
• $\eta$-pairing superfluid in periodically-driven fermionic Hubbard model with strong attraction
• Dynamical and Reversible Control of Topological Spin Textures
• Doublon dynamics in the extended Fermi Hubbard model
• Enhancement of Local Pairing Correlations in Periodically Driven Mott Insulators
• Producing Coherent Excitations in Pumped Mott Antiferromagnetic Insulators
• Repulsion-to-attraction transition in correlated electron systems triggered by a monocycle pulse
• Floquet prethermalization in the resonantly driven Hubbard model
• Laser-induced topological superconductivity in cuprate thin films
• Two-particle pairing and phase separation in a two-dimensional Bose-gas with one or two sorts of bosons
• Dielectric breakdown of Mott insulators -- doublon production and doublon heating
• Effect of Doublon-Holon Binding on Mott transition---Variational Monte Carlo Study of Two-Dimensional Bose Hubbard Models
• Filling-dependent doublon dynamics in the one-dimensional Hubbard model
• Dynamical control of electron-phonon interactions with high-frequency light
• Effective Hamiltonians for fastly driven tight-binding chains
• The response to dynamical modulation of the optical lattice for fermions in the Hubbard model
• Relaxation of Fermionic Excitations in a Strongly Attractive Fermi Gas in an Optical Lattice
• Pump-probe Auger-electron spectroscopy of Mott insulators
• Quasi-adiabatic dynamics and state preparation in Floquet many-body systems

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• Electron-magnon dynamics triggered by an ultrashort laser pulse: A real-time Dual $GW$ study
• Spectroscopic evidence for engineered hadron formation in repulsive fermionic $\text{SU}(N)$ Hubbard Models