Small Amplitude Solitons in Bose--Einstein Condensates with External Perturbation
WANG Feng-Jiao1, YAN Xiao-Hong2, WANG Deng-Long 1,2
1Department of Physics and Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, Xiangtan University, Xiangtan 4111052College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016
Small Amplitude Solitons in Bose--Einstein Condensates with External Perturbation
WANG Feng-Jiao1;YAN Xiao-Hong2;WANG Deng-Long 1,2
1Department of Physics and Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, Xiangtan University, Xiangtan 4111052College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016
摘要By developing a small amplitude soliton approximation method, we study analytically weak nonlinear excitations in cigar-shaped condensates with repulsive interatomic interaction under consideration of external perturbation potential. It is shown that matter wave solitons may exist and travel over a long distance without attenuation and change in shape by properly adjusting the strength of interatomic interaction to compensate for the effect of external perturbation potential.
Abstract：By developing a small amplitude soliton approximation method, we study analytically weak nonlinear excitations in cigar-shaped condensates with repulsive interatomic interaction under consideration of external perturbation potential. It is shown that matter wave solitons may exist and travel over a long distance without attenuation and change in shape by properly adjusting the strength of interatomic interaction to compensate for the effect of external perturbation potential.
WANG Feng-Jiao;YAN Xiao-Hong;WANG Deng-Long;. Small Amplitude Solitons in Bose--Einstein Condensates with External Perturbation[J]. 中国物理快报, 2008, 25(1): 4-7.
WANG Feng-Jiao, YAN Xiao-Hong, WANG Deng-Long,. Small Amplitude Solitons in Bose--Einstein Condensates with External Perturbation. Chin. Phys. Lett., 2008, 25(1): 4-7.
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