Fermionic representation of a symmetrically frustrated SU(3) model: Application to the Haldane-gap antiferromagnets |
| |
| Authors: | Peng Li Shun-Qing Shen |
| |
| Institution: | a Department of Physics, Sichuan University, Chengdu 610064, China
b Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, China |
| |
| Abstract: | The one-dimensional spin 1 bilinear-biquadratic model is re-expressed in a symmetrically frustrated SU(3) model, which facilitates us to introduce a fermionic representation and related bond-operator mean-field theory. By analyzing the gap and the static spin susceptibility, we shows that this treatment can easily capture the commensurate and incommensurate Haldane gap phases. |
| |
| Keywords: | 75 10 Jm 75 40 Gb 73 43 Cd |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
