ELEMENTARY EXCITATIONS OF ONE-DIMENSIONALQUANTUM SINE-GORDON MODEL

CHEN YU-GUANG; YUAN QING-SHAN; CHEN HONG; ZHANG YU-MEI; WU XIANG

doi:10.7498/aps.46.1174

Abstract
Using the-self-consistent quantum perturbation theory, we study the elementary excitaton of one-dimensional sine-Gordon model described by parameters α0 and β0. It is demonstrated in this article that the elementary excitations consist of quantum solitons and antisolitons.Under the condition α020≤8π,our results for the gaps agree with the exact results of the Thirring model and the half-filling Hubbard model based on the bosonization techniques.
Authors and contacts
CHEN YU-GUANG,

YUAN QING-SHAN,

CHEN HONG,

ZHANG YU-MEI,

WU XIANG

1.
同济大学波耳固体物理研究所
References

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[10]	Mo Jia-Qi. Analytic solution for a class of generalized Sine-Gordon perturbation equation. Acta Physica Sinica, 2009, 58(5): 2930-2933. doi: 10.7498/aps.58.2930
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[12]	Wang Hong, Lou Ping, Zhuang Yong-He. Flow equations for solving elementary excitation energy spectrum of the t-J model. Acta Physica Sinica, 2004, 53(2): 577-581. doi: 10.7498/aps.53.577
[13]	TANG YI, YAN JIA-REN, ZHANG KAI-WANG, CHEN ZHEN-HUA. PERTURBATION THEORY FOR SINE-GORDON EQUATION. Acta Physica Sinica, 1999, 48(3): 480-484. doi: 10.7498/aps.48.480
[14]	Xu Bo-Wei, Chen Zhi-Jian, Ding Guo-Hui, Zhang Yu-Mei. . Acta Physica Sinica, 1995, 44(2): 189-195. doi: 10.7498/aps.44.189
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Vol. 46, Issue 6 - 1997-03-20

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