Systematic 1/S study of the 2D Hubbard model at half-filling

Details Systematic 1/S study of the 2D Hubbard model at half-filling Systematic 1/S study of the 2D Hubbard model at half-filling

1994-02-22

arxiv.org/abs/cond-mat/9402097v1

Physics

Condensed Matter

18 pages, emTex version 3.0

Scientific paper

10.1103/PhysRevB.50.6238

The 2D Hubbard model is extended by placing 2S orbitals at each lattice site and studied in a systematic 1/S expansion. The 1/S results for the magnetic susceptibility and the spectra of spin-wave excitations at half-filling are consistent with the large S calculations for the Heisenberg antiferromagnet. The 1/S corrections to the fermionic spectrum lift the degeneracy along the edge of the magnetic Brillouin zone yielding minima at (+- pi/2, +- pi/2). Relation to previous papers on the subject is discussed.

Affiliated with

Also associated with

No associations

Rating

Systematic 1/S study of the 2D Hubbard model at half-filling 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 Systematic 1/S study of the 2D Hubbard model at half-filling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Systematic 1/S study of the 2D Hubbard model at half-filling will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-124090