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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.
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CHEN YU-GUANG,

YUAN QING-SHAN,

CHEN HONG,

ZHANG YU-MEI,

WU XIANG

1.
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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
[15]	DING GUO-HUI, XU BO-WEI, ZHANG YU-MEI.RENORMALIZATION AND CRITICAL BEHAVIOR OF SINE-GORDON MODEL. Acta Physica Sinica, 1994, 43(9): 1404-1412.doi:10.7498/aps.43.1404
[16]	WANG QIANG-HUA, YAO XI-XIAN.DYNAMICS OF ROTATIONALLY SYMMETRIC SINE-GORDON SOL1TONS WITH APPLLCATIONS FOR A LARGE AREA JOSEPHSON JUNCTION. Acta Physica Sinica, 1993, 42(4): 513-521.doi:10.7498/aps.42.513
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[19]	WANG ZHEN-LI, LOU SEN-YUE.THE COLEMAN PHASE TRANSITION FOR THE DOUBLE sine-GORDON MODEL IN n+1 DIMENSIONS. Acta Physica Sinica, 1990, 39(7): 8-14.doi:10.7498/aps.39.8
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Vol. 46, Issue 6 - 1997-03-20

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