Spectral function of the 2D Hubbard model: a density matrix renormalization group plus cluster perturbation theory study

Abstract

We study the spectral function of the 2D Hubbard model using cluster perturbation theory, and the density matrix renormalization group as a cluster solver. We reconstruct the two-dimensional dispersion at, and away from half-filling using 2xL ladders, with L up to 80 sites, yielding results with unprecedented resolution in excellent agreement with quantum Monte Carlo. The main features of the spectrum can be described with a mean-field dispersion, while kinks and pseudogap traced back to scattering between spin and charge degrees of freedom.

5 pages, 3 figures

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Cited by in corpus (22)

• The Hubbard model: A computational perspective
• The Hubbard model on the honeycomb lattice: from static and dynamical mean-field theories to lattice quantum Monte Carlo simulations
• Automatic differentiation applied to excitations with Projected Entangled Pair States
• Finite temperature dynamics of the Mott insulating Hubbard chain
• Hidden-Fermion Representation of Self-energy in Pseudogap and Superconducting States of Two-Dimensional Hubbard Model
• Doping and temperature evolution of pseudogap and spin-spin correlations in the two-dimensional Hubbard model
• Doping evolution of charge and spin excitations in two-leg Hubbard ladders: comparing DMRG and RPA+FLEX results
• Spectral properties of 1D extended Hubbard model from bosonization and time-dependent variational principle: applications to 1D cuprate
• The spectral function of Mott-insulating Hubbard ladders: From fractionalized excitations to coherent quasi-particles
• Beyond perturbation theory: A time-dependent approach to inelastic scattering spectroscopies in- and away from equilibrium
• Signatures of the Attractive Interaction in Spin Spectra of One-dimensional Cuprate Chains
• Many-body effects on high-harmonic generation in Hubbard ladders
• The fate of pairing and spin-charge separation in the presence of long-range antiferromagnetism
• Temperature-driven change in band structure reflecting spin-charge separation of Mott and Kondo insulators
• Spectral functions of the honeycomb lattice with both the Hubbard and long-range Coulomb Interactions
• Dynamical exchange-correlation potential formalism for spin-$\frac{1}{2}$ Heisenberg and Hubbard chains: the antiferromagnetic/half-filled case
• Itinerant-localized model of strongly correlated electrons: Fermi-surface reconstruction
• Hidden self-energies as origin of cuprate superconductivity revealed by machine learning
• Effect of short-range correlations on spectral properties of doped Mott insulators
• Fermionic-propagator and alternating-basis quantum Monte Carlo methods for correlated electrons on a lattice
• Probing the pseudogap and beyond: Examining single-particle properties of the hole- and electron-doped Hubbard model
• Pseudogap in the lightly hole-doped triangular-lattice moiré Hubbard model