Results 251 to 260 of about 266,938 (298)

Non-Fermi liquid of extended range at zero temperature without quantum criticality. [PDF]

Sci Rep
Park TH, Choi HY.
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Boolean network and meshless simulations for the comparison of transport and reaction mechanisms arising in one-short tri-exponential and uniform infusion electrochemotherapeutic treatments. [PDF]

Front Bioinform
Vélez Salazar FM, Patiño Arcila ID, Rivera Madrid IE, Rincón Fulla M.   +3 more
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Advances in Modelling Radiative Transfer, Heat Storage and Turbulent Transport to Evaluate CO₂, Heat and Water Fluxes Over Broad-Leaved Forests: The CanVeg2 Model. [PDF]

Glob Chang Biol
Béland M, Bonan GB, Meyers TP, Munger JW, Kobayashi H, Baldocchi D.   +5 more
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Ferromagnetism in the Hubbard model

Journal of Physics: Condensed Matter, 1991
The stability of the ferromagnetic state with complete spin alignment against a single spin reversal is studied in the square-lattice Hubbard model with nearest-neighbour hopping. A variational ansatz is used, which is exact in one dimension and by comparison with accurate results for small clusters yields almost exact results in the two-dimensional ...
Linden, W., Edwards, D.
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THE HUBBARD-STRATONOVICH TRANSFORMATION AND THE HUBBARD MODEL

International Journal of Modern Physics B, 1991
The Hubbard-Stratonovich transformation allows one to formulate the problem of calculating the ground state properties of a many-body theory as one of sampling a distribution. This distribution is constructed by propagating a trial wave function under the influence of a one-body time-dependent external field.
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Disorder and interactions in the Hubbard model

Physical Review Letters, 1989
We investigate the single-band repulsive Hubbard model with random site energies as a model for the disordered electron system in the strong-interaction limit. Previous scaling treatments of this problem, pioneered by Finkel’shtein, are based on a perturbative treatment of the interactions and the scaling eventually fails as the couplings become large.
, Zimanyi, , Abrahams
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Band magnetism in the Hubbard model

Physical Review B, 1989
A self-consistent moment method is applied to the Hubbard model in order to find out under what circumstances spontaneous band magnetism may occur. The theory is formulated for a two-sublattice structure to treat simultaneously para-, ferro-, and antiferromagnetic systems.
Nolting, W., Borgiel, W.
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A Model for Crystallization: A Variation on the Hubbard Model

Physica A: Statistical Mechanics and its Applications, 1986
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Two Theorems on the Hubbard Model

Physical Review Letters, 1989
In the attractive Hubbard model (and some extended versions of it) the ground state is proved to have spin angular momentum S = 0 for every (even) electron filling. In the repulsive case, and with a bipartite lattice and a half filled band, the ground state has S = 1/2∥B∣ − ∣A∥, where ∣B∣ (resp. ∣A∣) is the number of sites in the B (resp. A) sublattice.
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The Hubbard Model

1991
This collection of articles provides authoritative and up-to-date reviews on the Hubbard Model. It will be useful to graduate students and researchers in the field.
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