An Envelope Soliton in a Nonlinear Chain with the Power-Law Dependence of Long-Range Interaction

Chin. Phys. Lett.

2003, Vol. 20

Issue (4): 554-556 DOI:

Original Articles

An Envelope Soliton in a Nonlinear Chain with the Power-Law Dependence of Long-Range Interaction

WANG Deng-Long^1,2;YAN Xiao-Hong¹;TANG Yi¹

¹Faculty of Material and Photoelectronic Physics, Xiangtan University, Xiangtan 411105 ²Institute of Mechanics and Material Engineering, Xiangtan University, Xiangtan 411105

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WANG Deng-Long, YAN Xiao-Hong, TANG Yi 2003 Chin. Phys. Lett. 20 554-556

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Abstract We study the Fermi-Pasta-Ulam lattice model in the presence of a power-law dependence of long-range interaction by virtue of the method of multiple scales. Our results show that an envelope soliton still appears, but it is of different property for the group velocity compared with that of the soliton in the model when long-range interaction is absent.

Keywords: 63.20.Ry 63.20.Pw 43.25.+y

Published: 01 April 2003

PACS:	63.20.Ry	(Anharmonic lattice modes)
	63.20.Pw	(Localized modes)
	43.25.+y	(Nonlinear acoustics)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2003/V20/I4/0554

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