Results 21 to 30 of about 13,863,108 (200)

The Hubbard Model

open access: yesAnnual Review of Condensed Matter Physics, 2022
The repulsive Hubbard model has been immensely useful in understanding strongly correlated electron systems and serves as the paradigmatic model of the field. Despite its simplicity, it exhibits a strikingly rich phenomenology reminiscent of that observed in quantum materials. Nevertheless, much of its phase diagram remains controversial.
Arovas, Daniel P.   +3 more
openaire   +2 more sources

Ferromagnetism in Hubbard Models [PDF]

open access: yesPhysical Review Letters, 1995
We present the first rigorous examples of non-singular Hubbard models which exhibit ferromagnetism at zero temperature. The models are defined in arbitrary dimensions, and are characterized by finite-ranged hoppings, dispersive bands, and finite on-site Coulomb interaction U.
openaire   +3 more sources

Single-Particle Spectral Function Formulated and Calculated by Variational Monte Carlo Method with Application to d-Wave Superconducting State

open access: yesPhysical Review X, 2020
A method to calculate the one-body Green’s function for ground states of correlated electron materials is formulated by extending the variational Monte Carlo method.
Maxime Charlebois, Masatoshi Imada
doaj   +1 more source

One Dimensional Bose-Hubbard Model Simulatation of Quantum Gas in Optical Lattice [PDF]

open access: yesJisuanji gongcheng, 2018
For the one-dimensional Bose-Hubbard theoretical model of condensed matter,the quantum phase transition process of the superfluid-Mott insulation state in the one-dimensional Bose-Hubbard model is realized by continuously changing the depth of the ...
LUAN Tian,ZHANG Xuesong,CHEN Xuzong
doaj   +1 more source

Orbital structure of the effective pairing interaction in the high-temperature superconducting cuprates

open access: yesnpj Quantum Materials, 2021
The nature of the effective interaction responsible for pairing in the high-temperature superconducting cuprates remains unsettled. This question has been studied extensively using the simplified single-band Hubbard model, which does not explicitly ...
Peizhi Mai   +3 more
doaj   +1 more source

Hubbard Notice of Adopted Amendment (2008-08-14) [PDF]

open access: yes, 2008
85 pp. Adopted 2008-08-14. Department of Land Conservation and Development Notice of Adopted AmendmentThis amendment included adoption of a revised Economics Section of the Hubbard Comprehensive Plan and a 19-acre urban growth boundary expansion for ...
Hubbard (Or.)
core   +2 more sources

Recent Progress in Lattice Density Functional Theory

open access: yesComputation, 2019
Recent developments in the density-functional theory of electron correlations in many-body lattice models are reviewed. The theoretical framework of lattice density-functional theory (LDFT) is briefly recalled, giving emphasis to its universality and to ...
T. S. Müller, W. Töws, G. M. Pastor
doaj   +1 more source

On integrability of the one-dimensional Hubbard model

open access: yesPhysics Letters B, 2023
We find a family of solutions to Zamolodchikov's tetrahedral algebra corresponding to the fermionic R-operator for the free fermion model of the difference type in one of the spectral parameters, construct an extension of the R-operator for a system of ...
A. Melikyan
doaj   +1 more source

A range three elliptic deformation of the Hubbard model

open access: yesSciPost Physics, 2023
In this paper we present a new integrable deformation of the Hubbard model. Our deformation gives rise to a range 3 interaction term in the Hamiltonian which does not preserve spin or particle number.
Marius de Leeuw, Chiara Paletta, Balázs Pozsgay
doaj   +1 more source

Performance, Growth Curves and Carcass Yield of Four Strains of Broiler Chicken [PDF]

open access: yesBrazilian Journal of Poultry Science, 2019
The objective of this study was to evaluate the performance, carcass yield and growth curves of different commercial strains of broiler chicken. 2400 day-old chicks, males and females of the Cobb500, RossAp95, Hubbard Flex and a new Francesa line were ...
BRF Nogueira   +6 more
doaj   +1 more source

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