Results 1 to 10 of about 19,877 (264)
The Fractal-Lattice Hubbard Model [PDF]
QuantumHere, we investigate the fractal-lattice Hubbard model using various numerical methods: exact diagonalization, the self-consistent diagonalization of a (mean-field) Hartree-Fock Hamiltonian and state-of-the-art Auxiliary-Field Quantum Monte Carlo.
Monica Conte +3 more
doaj +4 more sources
The Hubbard Model: A Computational Perspective [PDF]
Annual Review of Condensed Matter Physics, 2022 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 fruit fly to biomedical science. Despite its simplicity, the model exhibits an incredible wealth of phases, phase transitions, and exotic correlation phenomena ...
Qin, M. +4 more
openaire +4 more sources
Frontiers in Physics, 2022 We study the magnetic and spectral properties of a single-band Hubbard model for the infinite-layer nickelate compound LaNiO2. As spatial correlations turn out to be the key ingredient for understanding its physics, we use two complementary extensions of
Marcel Klett +2 more
doaj +1 more source
Tunneling Current Through a Double Quantum Dots System
IEEE Access, 2022 Electrostatically confined quantum dots in semiconductors hold the promise to achieve high scalability and reliability levels for practical implementation of solid-state qubits where the electrochemical potentials of each quantum dot can be independently
Amin Rassekh +3 more
doaj +1 more source
Superfluid density and two-component conductivity in hole-doped cuprates
Frontiers in Physics, 2022 While the pseudogap dominates the phase diagram of hole-doped cuprates, connecting the antiferromagnetic parent insulator at low doping to the strange metal at higher doping, its origin and relation to superconductivity remains unknown.
Jake Ayres +4 more
doaj +1 more source
Microscopic theory of high-temperature superconductivity in strongly correlated electronic systems
Condensed Matter Physics, 2021 A consistent microscopic theory of superconductivity for strongly correlated electronic systems is presented. The Dyson equation for the normal and anomalous Green functions for the projected (Hubbard) electronic operators is derived.
N.M. Plakida
doaj +1 more source
Fermionization and Hubbard models [PDF]
Nuclear Physics B, 1998 We introduce a transformation which allows the fermionization of operators of any one-dimensional spin-chain. This fermionization procedure is independent of any eventual integrable structure and is compatible with it. We illustrate this method on various integrable and non-integrable chains, and deduce some general results.
Dargis, P., Maassarani, Z.
openaire +3 more sources
Photoemission "experiments" on holographic lattices
SciPost Physics Core, 2023 We construct a 2D holographic ionic lattice with hyperscaling-violating infrared geometry and study single-electron spectral functions ("ARPES photoemission curves") on this background. The spectra typically show a three-peak structure, where the central
Filip Herček, Vladan Gecin, Mihailo Čubrović
doaj +1 more source
Level statistics of the one-dimensional ionic Hubbard model
Physical Review Research, 2022 In this paper we analyze the spectral level statistics of the one-dimensional ionic Hubbard model, the Hubbard model with an alternating on-site potential.
Jeannette De Marco +5 more
doaj +1 more source
Ising expansion for the Hubbard model [PDF]
Physical Review B, 1995 22 pages, 6 Postscript figures ...
Shi, Zhu-Pei, Singh, Rajiv R. P.
openaire +3 more sources