Variational Calculation of the Excited States in the Sing-Gordon and Sine-Gordon Field Theories

Chin. Phys. Lett.

1993, Vol. 10

Issue (1): 8-10 DOI:

Original Articles

Variational Calculation of the Excited States in the Sing-Gordon and Sine-Gordon Field Theories

LU Wenfa;XU Bowei

Department of Physics, Shanghai Jiaotong University, Shanghai 200030

Cite this article:

LU Wenfa, XU Bowei 1993 Chin. Phys. Lett. 10 8-10

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Abstract The one- and two-particle states in the sinh-Gordon and sine-Gordon models in (1+1) dimensions are investigated by using the gaussian wave-functional approach. We find that (i) the renormalized mass parameter is just the variational one particle mass, and (ii) there are no two-particle bound states in the sinh-Gordon model, but in the sine-Gordon model, there exist two-particle bound states.

Keywords: 11.10.-z

Published: 01 January 1993

PACS:

11.10.-z

(Field theory)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1993/V10/I1/08

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