Quantum Poincare Section of a Two—Dimensional Hamiltonian in a Coherent State Representation |
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作者姓名: | 金迎新 贺凯芬 |
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作者单位: | [1]KeyLaboratoryofBeamTechnologyandMaterialModificationofMinistryofEducation,BeijingNormalUniversity,Beijing100875 [2]InstituteofLowEnergyNuclearPhysics,BeijingNormalUniversity,Beijing |
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摘 要: | We study the quantum behaviour of a quasi-integrable Hamiltonian.The unperturbed Hamiltonian displays degeneracies of energy levels,which become avoided crossing under a nonintegrable perturbation.In this two-dimensional system,the quantum Poincare section plot is constructed in the coherent state representation with the restriction that the centres of the wavepackets are confined at thd classical surface of constant energy.It is found that the quantum Poincare section plot obtained in this way provides an evident counterpart of the classical system.
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关 键 词: | 非线性经典系统 相干态表示 量子Poincare截面 量子混沌 |
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