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A generalized harmonic oscillator model of energy level particles and NNS distribution——A unified theory for NNS distribution of energy level fluctuation spectra

A generalized harmonic oscillator model of energy level particles and NNS distribution——A unified theory for NNS distribution of energy level fluctuation spectra
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摘要 Based on the concept of the energy level repulsion, a potential function followed by the energy level particles is suggested. By regarding the energy level fluctuation spectrum as a dynamic system which consists of the pairs of energy level particles behaving as the generalized harmonic oscillator, a generalized Schrdinger equation valid for the nearest neighbor space (NNS) distribution of the levels is established. It turns out that the different kinds of NNS distributions found so far are the solutions of this equation: Both the Poisson type and Wigner type are its eigen solutions whereas the Gaussian unitary ensemble (GUE) type and the Brody type of NNS distribution are its composite solutions. Furthermore, the influences of the small perturbation on the NNS distribution are analyzed. Based on the concept of the energy level repulsion, a potential function followed by the energy level particles is suggested. By regarding the energy level fluctuation spectrum as a dynamic system which consists of the pairs of energy level particles behaving as the generalized harmonic oscillator, a generalized Schrdinger equation valid for the nearest neighbor space (NNS) distribution of the levels is established. It turns out that the different kinds of NNS distributions found so far are the solutions of this equation: Both the Poisson type and Wigner type are its eigen solutions whereas the Gaussian unitary ensemble (GUE) type and the Brody type of NNS distribution are its composite solutions. Furthermore, the influences of the small perturbation on the NNS distribution are analyzed.
出处 《Science China Chemistry》 SCIE EI CAS 1998年第2期207-214,共8页 中国科学(化学英文版)
基金 ProjectsupportedbytheNationalNaturalScienceFoundationofChina (GrantNo .2 96 730 2 8)
关键词 energy LEVEL REPULSION potential function of LEVEL PARTICLES NNS DISTRIBUTION GENERALIZED Schrdinger equation. energy level repulsion, potential function of level particles, NNS distribution, generalized Schrdinger equation.
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参考文献12

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