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Controlling of Fusion of Two Solitons in a Two-Component Condensate by an Anharmonic External Potential |
| ZHANG Zhi-Qiang, WANG Deng-Long**, LUO Xiao-Qing, HE Zhang-Ming, DING Jian-Wen
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Department of Physics, the Key Laboratory of Quantum Engineering and Micro-Nano Energy Technology of the Education Bureau of Hunan Province, Xiangtan University, Xiangtan 411105
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ZHANG Zhi-Qiang, WANG Deng-Long, LUO Xiao-Qing et al 2011 Chin. Phys. Lett. 28 050305 |
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Abstract By using the multiple-scale method, we analytically study dynamical properties of two-component Bose-Einstein condensates trapped in a harmonic plus quartic anharmonic potential. It is shown that the anharmonic potential has an important effect on the dark solitons of the condensates. In particular, when the strength of the anharmonic external potential increases, the fusion of the two solitons becomes faster. This implies that the fusion of the two solitons can be controlled by an anharmonic potential.
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| Keywords:
03.75.Lm
03.75.Mn
05.45.Yv
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Received: 28 October 2010
Published: 26 April 2011
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| PACS: |
03.75.Lm
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(Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)
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03.75.Mn
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(Multicomponent condensates; spinor condensates)
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05.45.Yv
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(Solitons)
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