Evolutions of matter-wave bright soliton with spatially modulated nonlinearity |
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| Authors: | Yongshan Cheng Fei Liu |
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| Institution: | 1. Instituto de Feòrica Teórica,Universidacle Estadual Paulista,S(a)o Paulo 01.405-900,S(a)o Paulo,Brazil;Department of Physics,Hubei Normal University,Huangshi 435002,China
2. Department of Physics,Hubei Normal University,Huangshi 435002,China |
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| Abstract: | The evolution characteristics of a matter-wave bright soliton are investigated by means of the variational approach in the presence of spatially varying nonlinearity. It is found that the atom density envelope of the soliton is changed as a result of the spatial variation of the s-wave scattering length. The stable soliton can exist in appropriate initial conditions. The movement of the soliton depends on the sign and value of the coefficient of spatially modulated nonlinearity. These theoretical prediction... |
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