学科分类
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1 个结果
  • 简介:Theevolutioncharacteristicsofamatter-wavebrightsolitonareinvestigatedbymeansofthevariationalapproachinthepresenceofspatiallyvaryingnonlinearity.Itisfoundthattheatomdensityenvelopeofthesolitonischangedasaresultofthespatialvariationofthes-wavescatteringlength.Thestablesolitoncanexistinappropriateinitialconditions.Themovementofthesolitondependsonthesignandvalueofthecoefficientofspatiallymodulatednonlinearity.Thesetheoreticalpredictionsareconfirmedbythefullnumericalsimulationsoftheone-dimensionalGross-Pitaevskiiequation.

  • 标签: 非线性系数 空间调制 亮孤子 演化 物质波 变分方法