Perturbative corrections to the Gutzwiller mean-field solution of the Mott-Hubbard model

Details Perturbative corrections to the Gutzwiller mean-field solution of the Mott-Hubbard model Perturbative corrections to the Gutzwiller mean-field solution of the Mott-Hubbard model

2004-04-23

arxiv.org/abs/cond-mat/0404576v1

Phys. Rev. A 70, 053609 (2004)

Physics

Condensed Matter

Soft Condensed Matter

10 pages, 10 figues

Scientific paper

10.1103/PhysRevA.70.053609

We study the Mott-insulator transition of bosonic atoms in optical lattices. Using perturbation theory, we analyze the deviations from the mean-field Gutzwiller ansatz, which become appreciable for intermediate values of the ratio between hopping amplitude and interaction energy. We discuss corrections to number fluctuations, order parameter, and compressibility. In particular, we improve the description of the short-range correlations in the one-particle density matrix. These corrections are important for experimentally observed expansion patterns, both for bulk lattices and in a confining trap potential.

Affiliated with

Also associated with

No associations

Rating

Perturbative corrections to the Gutzwiller mean-field solution of the Mott-Hubbard model 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 Perturbative corrections to the Gutzwiller mean-field solution of the Mott-Hubbard model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Perturbative corrections to the Gutzwiller mean-field solution of the Mott-Hubbard model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1504