中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Weak-coupling phase diagram of the one-dimensional deformed t-J model

文献类型:期刊论文

作者Ma, Qingshan1; Dai, Jianhui1; Xu, Zhaoxin1; Zhang, Jun2
刊名MODERN PHYSICS LETTERS A
出版日期2007-03-28
卷号22页码:733-740
关键词deformed t-J lattice model bosonization quantum phase transitions
ISSN号0217-7323
英文摘要The deformed t-J lattice model is defined by replacing the fermion operators by the deformed Hubbard operators in the t-term but without changing the J-term in the conventional t-J model. The physics of this model was argued to be continuously connected to those of the t-J one when the deformation parameter lambda varies from zero to unit. In this paper, by using the bosonization field theory and renormalization group technique, we study the phase diagram of the one dimension deformed t-J model in the regime where lambda and J/t are both positively small but comparable to each other. By explicitly incorporating the contributions from the deformation-induced six-particle term and the antiferromagnetic exchange interaction, we find that at half-filling the system shows three distinct ground states characterized by the Luttinger liquid, the spin-density-wave and the bond-order-wave, respectively. These results indicate that the ground state phases of the deformed t-J model is neither connected smoothly to those of the system at lambda=1 nor to those of the conventional t-J model.
WOS关键词EXTENDED HUBBARD-MODEL ; SUPERCONDUCTIVITY ; TRANSITION ; SYSTEMS ; STATE ; GAS
WOS研究方向Physics
语种英语
WOS记录号WOS:000251776500031
出版者WORLD SCIENTIFIC PUBL CO PTE LTD
源URL[http://119.78.100.186/handle/113462/27549]  
专题中国科学院近代物理研究所
通讯作者Ma, Qingshan
作者单位1.Zhejiang Univ, Inst Modern Phys, Hangzhou 310027, Peoples R China
2.Xinjiang Univ, Dept Phys, Wurumuqi, Peoples R China
推荐引用方式
GB/T 7714
Ma, Qingshan,Dai, Jianhui,Xu, Zhaoxin,et al. Weak-coupling phase diagram of the one-dimensional deformed t-J model[J]. MODERN PHYSICS LETTERS A,2007,22:733-740.
APA Ma, Qingshan,Dai, Jianhui,Xu, Zhaoxin,&Zhang, Jun.(2007).Weak-coupling phase diagram of the one-dimensional deformed t-J model.MODERN PHYSICS LETTERS A,22,733-740.
MLA Ma, Qingshan,et al."Weak-coupling phase diagram of the one-dimensional deformed t-J model".MODERN PHYSICS LETTERS A 22(2007):733-740.

入库方式: OAI收割

来源:近代物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。