$XXZ$ model as effective Hamiltonian for generalized Hubbard models with broken $η$-symmetry

Details $XXZ$ model as effective Hamiltonian for generalized Hubbard models with broken $η$-symmetry $XXZ$ model as effective Hamiltonian for generalized Hubbard models with broken $η$-symmetry

1994-11-14

arxiv.org/abs/cond-mat/9411051v2

Physics

Condensed Matter

Results of previous version are generalized, new title, references added. 10 pages, Latex, no figures

Scientific paper

10.1088/0305-4470/28/10/004

We consider the limit of strong Coulomb attraction for generalized Hubbard models with $\eta$-symmetry. In this limit these models are equivalent to the ferromagnetic spin-1/2 Heisenberg quantum spin chain. In order to study the behaviour of the superconducting phase in the electronic model under perturbations which break the $\eta$-symmetry we investigate the ground state of the ferromagnetic non-critical $XXZ$-chain in the sector with fixed magnetization. It turns out to be a large bound state of $N$ magnons. We find that the perturbations considered here lead to the disappearance of the off-diagonal longe-range order.

Affiliated with

Also associated with

No associations

Rating

$XXZ$ model as effective Hamiltonian for generalized Hubbard models with broken $η$-symmetry 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 $XXZ$ model as effective Hamiltonian for generalized Hubbard models with broken $η$-symmetry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and $XXZ$ model as effective Hamiltonian for generalized Hubbard models with broken $η$-symmetry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-194651