Rigorous results on a first-order phase transition in antiferromagnetic spin-1/2 coupled chains
Condensed Matter
2016-08-31 v1
Abstract
Some rigorous results are presented for a first-order quantum phase transition between the dimerized state and Haldane-type state (i.e., a state similar to the ground state of the one-dimensional spin-1 Heisenberg chain) in the spin-1/2 coupled chains with nearest-neighbour and next-nearest-neighbour Heisenberg interactions. Also presented are the exact excited states in both phases. A partial phase diagram of the general spin-1/2 coupled chains is discussed.
Keywords
Cite
@article{arxiv.cond-mat/9501006,
title = {Rigorous results on a first-order phase transition in antiferromagnetic spin-1/2 coupled chains},
author = {Y. Xian},
journal= {arXiv preprint arXiv:cond-mat/9501006},
year = {2016}
}
Comments
4 pages, RevTeX 3.0, one ps figure available upon request