Solitary Multiphonon Bound States and Periodic Wave Solutionin Inharmonic Molecular Crystals |
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收稿时间: | 1996-05-28 |
Solitary Multiphonon Bound States and Periodic Wave Solution in Inharmonic Molecular Crystals |
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Authors: | Wuming LIU and Fucho PU Benlian ZHOU |
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Affiliation: | Wuming LIU and Fucho PU (Institute of Physics,Chinese Academy of Sciences,Beijing,China)Benlian ZHOU (International Center for Materials Physics,Institute of Metals Research,Chinese Academy of Sciences,Shenyang,China)(To whom correspo |
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Abstract: | Employing the coherent state ansatz and the time-dependent variational principle, we obtain a partial differential equation of motion from Hamiltonian in inharmonic molecuIar crystals. By using the method of multiple scales. we reduce this equation into the envelope function and find that the amplitude function satisfied a nonlinear Schrodinger equation. Introducing the inverse scattering transformation, we gain the single-, twry and N- soliton solutions. The energy and the spatial configurations of the system are given. We also acquire the periodic wave solution and analyze its stability. |
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