Anomalous spin-charge separation in a driven Hubbard system

Abstract

Spin-charge separation (SCS) is a striking manifestation of strong correlations in low-dimensional quantum systems, whereby a fermion splits into separate spin and charge excitations that travel at different speeds. Here, we demonstrate that periodic driving enables control over SCS in a Hubbard system near half-filling. In one dimension, we predict analytically an exotic regime where charge travels slower than spin and can even become 'frozen', in agreement with numerical calculations. In two dimensions, the driving slows both charge and spin, and leads to complex interferences between single-particle and pair-hopping processes.

arXiv commentarXiv admin note: text overlap with arXiv:2002.02312

References in corpus (63)

• The density-matrix renormalization group in the age of matrix product states
• Experimental realisation of the topological Haldane model
• Complexity in Strongly Correlated Electronic Systems
• Efficient simulation of one-dimensional quantum many-body systems
• Observation of many-body localization of interacting fermions in a quasi-random optical lattice
• Universal High-Frequency Behavior of Periodically Driven Systems: from Dynamical Stabilization to Floquet Engineering
• Atomic quantum gases in periodically driven optical lattices
• Theory of Intertwined Orders in High Temperature Superconductors
• Probing the relaxation towards equilibrium in an isolated strongly correlated 1D Bose gas
• Light-induced anomalous Hall effect in graphene
• An optically stimulated superconducting-like phase in K3C60 far above equilibrium Tc
• Stripe order in the underdoped region of the two-dimensional Hubbard model
• Competing states in the t-J model: uniform d-wave state versus stripe state
• Quantum phases from competing short- and long-range interactions in an optical lattice
• Spin and Charge Resolved Quantum Gas Microscopy of Antiferromagnetic Order in Hubbard Chains
• Spin-charge separation and localization in one-dimension
• Resonant x-ray scattering studies of charge order in cuprates
• Three-Dimensional Charge Density Wave Order in YBa2Cu3O6.67 at High Magnetic Fields
• Observation of Spatial Charge and Spin Correlations in the 2D Fermi-Hubbard Model
• Site-resolved measurement of the spin-correlation function in the Hubbard model
• Probing spin-charge separation in a Tomonaga-Luttinger liquid
• Ultrafast and reversible control of the exchange interaction in Mott insulators
• Numerical evidence of fluctuating stripes in the normal state of high-Tc cuprate superconductors
• Superconductivity in the Hubbard model and its interplay with charge stripes and next-nearest hopping t'
• Ballistic transport in the one-dimensional Hubbard model: the hydrodynamic approach
• Transient superconductivity from electronic squeezing of optically pumped phonons
• Evidence for metastable photo-induced superconductivity in K${}_3$C${}_{60}$
• Schrieffer-Wolff Transformation for Periodically Driven Systems: Strongly Correlated Systems with Artificial Gauge Fields
• Spin-charge separation in ultra-cold quantum gases
• Stripe order from the perspective of the Hubbard model
• Enhancement and sign change of magnetic correlations in a driven quantum many-body system
• Spin-charge separation in cold Fermi-gases: a real time analysis
• Time-Resolved Observation of Spin-Charge Deconfinement in Fermionic Hubbard Chains
• Quantum state engineering of a Hubbard system with ultracold fermions
• Photo-molecular high temperature superconductivity
• Fermion-Spin Transformation to Implement the Charge-Spin Separation
• Angle resolved photoemission spectroscopy reveals spin charge separation in metallic MoSe2 grain boundary
• Doping dependent charge order correlations in electron-doped cuprates
• THz-Frequency Modulation of the Hubbard U in an Organic Mott Insulator
• Floquet dynamics in driven Fermi-Hubbard systems
• Direct observation of incommensurate magnetism in Hubbard chains
• Pair Correlations in Doped Hubbard Ladders
• Single hole spectral function and spin-charge separation in the t-J model
• Superconductivity in the doped $t$-$J$ model: results for four-leg cylinders
• Intertwined Order in a Frustrated 4-leg $t-J$ Cylinder
• Enhancement of super-exchange pairing in the periodically-driven Hubbard model
• Photo-induced electron pairing in a driven cavity
• Controlling the Floquet state population and observing micromotion in a periodically driven two-body quantum system
• Evidence for Spin-Charge Separation in the Two-Dimensional T-J Model
• Spin-Charge Separation in Two-dimensional Frustrated Quantum Magnets
• The Tensor Network Theory Library
• Interaction-Dependent Photon-Assisted Tunneling in Optical Lattices: A Quantum Simulator of Strongly-Correlated Electrons and Dynamical Gauge Fields
• Is there spin-charge separation in the 2D Hubbard and t-J models at low electronic densities?
• Spin-Charge Separation in the $t-J$ Model: Magnetic and Transport Anomalies
• Strong correlation induced charge localization in antiferromagnets
• Hole propagation in the Kitaev-Heisenberg model: From quasiparticles in quantum Neel states to non-Fermi liquid in the Kitaev phase
• Revealing missing charges with generalised quantum fluctuation relations
• Ultra-fast control of magnetic relaxation in a periodically driven Hubbard model
• Ground state phase diagram of the one-dimensional $t$-$J$ model with pair hopping terms
• Signatures of pairing in the magnetic excitation spectrum of strongly correlated ladders
• Characterizing the phase diagram of finite-size dipolar Bose-Hubbard systems
• Spin and charge dynamics of the t-J model at intermediate electron densities: absence of spin-charge separation
• Controlling magnetic correlations in a driven Hubbard system far from half-filling

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