Density-Matrix functional theory of strongly-correlated lattice fermions

Details Density-Matrix functional theory of strongly-correlated lattice fermions Density-Matrix functional theory of strongly-correlated lattice fermions

2002-07-17

arxiv.org/abs/cond-mat/0207429v1

Physics

Condensed Matter

Strongly Correlated Electrons

15 pages, 6 figures Submitted to PRB

Scientific paper

10.1103/PhysRevB.66.155118

A density functional theory (DFT) of lattice fermion models is presented, which uses the single-particle density matrix gamma_{ij} as basic variable. A simple, explicit approximation to the interaction-energy functional W[gamma] of the Hubbard model is derived from exact dimer results, scaling properties of W[gamma] and known limits. Systematic tests on the one-dimensional chain show a remarkable agreement with theBethe-Ansatz exact solution for all interaction regimes and band fillings. New results are obtained for the ground-state energyand charge-excitation gap in two dimensions. A successful description of strong electron correlations within DFT is achieved.

Affiliated with

Also associated with

No associations

Rating

Density-Matrix functional theory of strongly-correlated lattice fermions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Density-Matrix functional theory of strongly-correlated lattice fermions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Density-Matrix functional theory of strongly-correlated lattice fermions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-561586