Sandalov I S,Johansson B.Mean field theory for the N - orbital Hubbard Model beyond the Hubbard I apptoxi-mation. Physica B . 2000SANDALOV I S,JOHANSSON B. Mean field theory for the N-orbital Hubbard model beyond the Hubbard I approximation[J].Physical Review B 1995,206....
EXACT MEAN FIELD THEORY FOR CORRELATED LATTICE FERMIONS IN HIGH DIMENSIONSTheoretical or Mathematical/ Hubbard modellattice theory and statistics/ mean field theorycorrelated lattice fermionshigh dimensionsExtended Simplified Hubbard Modelcritical temperature...
A two-dimensional square-lattice Hubbard model is investigated. A slave-fermionformulation, in which the electron operator is expressed by a combination of hoseoperators for the spin freedom, and fermi operators for the charge freedom, is used.The phase diagram for the resonating valence bond (RVB...
Marco Schiro and Michele Fabrizio. "Quantum quenches in the Hub- bard model: Time-dependent mean-field theory and the role of quantum fluctuations". Physical Review B, 83(16) 165105 (2011)M. Schir´o and M. Fabrizio, Quantum quenches in the Hubbard model: Time- dependent mean-field ...
lattice fermion models (hubbard model, etc.)We present an embedding approach based on localized basis functions which permits an efficient application of the dynamical mean-field theory (DMFT) to inhomogeneous correlated materials, such as semi-infinite surfaces and heterostructures. In this scheme, ...
Slave spin cluster mean field theory away from half-filling: Application to the Hubbard and the extended Hubbard ModelA new slave-spin representation of ... SR Hassan,LD Medici 被引量: 0发表: 2008年 Lefschetz thimble Monte Carlo for many body theories: application to the repulsive Hubbard mod...
three-dimensional Hubbard model. The interplay of these nonlocal spin fluctuations with the local DMFT fluctuations is surprising: Close to the metal-insulator transition the nonlocal fluctuations strongly suppress the spectral function, in contrast to the weak-coupling expec- tation for th...
We consider a representation of the Hubbard model, in which the charge carriers are fermions and the spin carriers are bosons. We show that there exists a mean-field solution with a condensate of spin singlets and we characterize the low-temperature behavior of the quasiparticles. Finally, we ...
The cou- pling density equation, Bose–Hubbard model, G-P equation, Brueckner–Hartree–Fock theory, and other methods are often applied in analysis. Therefore, using mathematical models for dynamic analysis of BEC systems is effective. Based on this, research is conducted on BEC chaotic analysis...
lattice fermion models (hubbard model, etc.)nonequilibrium and irreversible thermodynamicsWe derive an exact mapping from the action of nonequilibrium dynamical mean-field theory (DMFT) to a single-impurity Anderson model (SIAM) with time-dependent parameters, which can be solved numerically by exact...