Excitations of anisotropic spin-1 chains with matrix product ground state

Details Excitations of anisotropic spin-1 chains with matrix product ground state Excitations of anisotropic spin-1 chains with matrix product ground state

2003-01-23

arxiv.org/abs/cond-mat/0301435v1

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages, 6 figures, accepted for publication in Eur. Phys. J. B, uses svjour.cls

Scientific paper

10.1140/epjb/e2003-00025-7

We investigate a large class of antiferromagnetic spin-1 chains with nearest neighbour interaction and exactly known matrix product ground state. The spectrum of low-lying excitations is calculated numerically by DMRG and exact diagonalisation. Spin liquid behaviour with an excitation gap is observed meeting the Haldane scenario. Further, we compare properties of the anisotropic model with the well-known isotropic AKLT model and use the analytical single mode approximation to obtain a quantitative understanding of the excitation gap. The low-lying excited states can be interpreted in terms of a magnon-like elementary excitation.

Affiliated with

Also associated with

No associations

Rating

Excitations of anisotropic spin-1 chains with matrix product ground state 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 Excitations of anisotropic spin-1 chains with matrix product ground state, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Excitations of anisotropic spin-1 chains with matrix product ground state will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-73940