The Hubbard model: A computational perspective
The Hubbard model is the simplest model of interacting fermions on a lattice and is of similar
importance to correlated electron physics as the Ising model is to statistical mechanics or the …
importance to correlated electron physics as the Ising model is to statistical mechanics or the …
Tracking the footprints of spin fluctuations: A multimethod, multimessenger study of the two-dimensional Hubbard model
The Hubbard model represents the fundamental model for interacting quantum systems and
electronic correlations. Using the two-dimensional half-filled Hubbard model at weak …
electronic correlations. Using the two-dimensional half-filled Hubbard model at weak …
Orbital-selective superconductivity in a two-band model of infinite-layer nickelates
In the present Rapid Communication, we explore superconductivity in Nd Ni O 2 and La Ni O
2 employing a first-principles derived low-energy model Hamiltonian, consisting of two …
2 employing a first-principles derived low-energy model Hamiltonian, consisting of two …
Magnon interactions in a moderately correlated Mott insulator
Quantum fluctuations in low-dimensional systems and near quantum phase transitions have
significant influences on material properties. Yet, it is difficult to experimentally gauge the …
significant influences on material properties. Yet, it is difficult to experimentally gauge the …
Interconnected renormalization of Hubbard bands and Green's function zeros in Mott insulators induced by strong magnetic fluctuations
We analyze the role of spatial electronic correlations and, in particular, of the magnetic
fluctuations in Mott insulators. A half-filled Hubbard model is solved at large strength of the …
fluctuations in Mott insulators. A half-filled Hubbard model is solved at large strength of the …
Dual boson diagrammatic Monte Carlo approach applied to the extended Hubbard model
In this work we introduce the dual boson diagrammatic Monte Carlo technique for strongly
interacting electronic systems. This method combines the strength of dynamical mean-filed …
interacting electronic systems. This method combines the strength of dynamical mean-filed …
Extended regime of metastable metallic and insulating phases in a two-orbital electronic system
We investigate the metal-to-insulator phase transition driven by the density-density
electronic interaction in the quarter-filled model on a cubic lattice with two orbitals split by a …
electronic interaction in the quarter-filled model on a cubic lattice with two orbitals split by a …
Dual parquet scheme for the two-dimensional Hubbard model: Modeling low-energy physics of high- cuprates with high momentum resolution
We present a method to treat the two-dimensional (2D) Hubbard model for parameter
regimes which are relevant for the physics of the high-T c superconducting cuprates. Unlike …
regimes which are relevant for the physics of the high-T c superconducting cuprates. Unlike …
Antiferromagnetic and spin spiral correlations in the doped two-dimensional Hubbard model: gauge symmetry, Ward identities, and dynamical mean-field theory …
IA Goremykin, AA Katanin - Physical Review B, 2024 - APS
We reconsider derivation of Ward identities for spin stiffnesses, which determine the
nonlinear sigma model of magnetic degrees of freedom of interacting electrons in the …
nonlinear sigma model of magnetic degrees of freedom of interacting electrons in the …
Charge order and antiferromagnetism in the extended Hubbard model
We study the extended Hubbard model on a two-dimensional half-filled square lattice using
the dynamical cluster approximation. We present results on the phase boundaries between …
the dynamical cluster approximation. We present results on the phase boundaries between …