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One-Dimensional Two-Component Bosons with Attractive Interaction |
| ZHANG Qiu-Lan |
| Zhejiang Institute of Modern Physics, Department of Physics, Zhejiang University, Hangzhou 310027 |
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| Cite this article: |
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ZHANG Qiu-Lan 2007 Chin. Phys. Lett. 24 3300-3303 |
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Abstract The Bethe-ansatz method is used to solve one-dimensional two-component
bosons with a δ-function potential considering the negative coupling constant part. With the string hypothesis of Minoru Takahashi, the features of the ground state and low-lying excited states of this model are discussed explicitly by analytical and numerical methods. Especially for a N=2 system, the two bosons being pairs is obvious, and the ground state which is independent of the coupling constant should be ferromagnetic.
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| Keywords:
03.65.-w
72.15.Nj
03.65.Ge
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Received: 10 July 2007
Published: 03 December 2007
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| PACS: |
03.65.-w
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(Quantum mechanics)
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72.15.Nj
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(Collective modes (e.g., in one-dimensional conductors))
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03.65.Ge
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(Solutions of wave equations: bound states)
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