Results 21 to 30 of about 6,166 (163)
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
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Exactly solvable extended Hubbard model [PDF]
Physical Review B, 1996 10 pages, Latex.
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Superconductivity in the extended Hubbard chain with three-electron density interaction
Results in Physics, 2022 At weak coupling and at half filling, we analytically study effects of an intersite three-electron density interaction (P) of the one-dimensional extended Hubbard model in addition to the usual two-electron density interactions (U,V). By the bosonization
Weiting Chen, Jun Zhang, Hanqin Ding
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Fermionic Concurrence in the Extended Hubbard Model [PDF]
Chinese Physics Letters, 2005 5 pages, 7 ...
Deng, Shu-Sa +2 more
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Thermodynamics of the metal-insulator transition in the extended Hubbard model
SciPost Physics, 2019 In contrast to the Hubbard model, the extended Hubbard model, which additionally accounts for non-local interactions, lacks systemic studies of thermodynamic properties especially across the metal-insulator transition.
Malte Schüler, Erik G. C. P. van Loon, Mikhail I. Katsnelson, Tim O. Wehling
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Disordered Supersolids in the Extended Bose-Hubbard Model [PDF]
Scientific Reports, 2017 AbstractThe extended Bose-Hubbard model captures the essential properties of a wide variety of physical systems including ultracold atoms and molecules in optical lattices, Josephson junction arrays, and certain narrow band superconductors. It exhibits a rich phase diagram including a supersolid phase where a lattice solid coexists with a superfluid ...
Fei Lin, T. A. Maier, V. W. Scarola
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Frontiers in Physics, 2020 We use quantum Monte Carlo simulations with the worm algorithm to study the phase diagram of a two-dimensional Bose-Hubbard model with cavity-mediated long-range interactions and uncorrelated disorder in the hard-core limit. Our study shows the system is
Chao Zhang, Heiko Rieger
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Doublon dynamics in the extended Fermi-Hubbard model [PDF]
Physical Review B, 2012 Two fermions occupying the same site of a lattice model with strongly repulsive Hubbard-type interaction U form a doublon, a long-living excitation the decay of which is suppressed because of energy conservation. By means of an exact-diagonalization approach based on the Krylov-space technique, we study the dynamics of a single doublon, of two doublons,
Hofmann, Felix, Potthoff, Michael
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Phase Separation and Pairing Fluctuations in Oxide Materials
Condensed Matter, 2020 The microscopic mechanism of charge instabilities and the formation of inhomogeneous states in systems with strong electron correlations is investigated.
Andreas Bill +5 more
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Physical Review Research, 2021 We study the electronic spectral properties at zero temperature of the one-dimensional (1D) version of the degenerate two-orbital Kanamori-Hubbard model, one of the well-established frameworks to study transition metal compounds, using state-of-the-art ...
N. Aucar Boidi +3 more
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