Physical Representation of Spectral Line Shape Based on Moments
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概要
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It is pointed out that, depending on the nature of the method of observation, full details of dynamics are not really needed in order to reproduce the canonical correlation spectra. In this spirit a physical representation of a spectrum is proposed on the basis of a few lower-order moments. It may be called the n-th order description, according to the extent to which a reliable knowledge on moments is at hand. As an example the third-order description is analysed in general, assuming the highest stage residual correlation as Gaussian. It is applied to the neutron inelastic scattering spectra in magnetic materials. In the case of an antiferromagnetic Heisenberg chain the results practically coincides with that of computer simulation, and are in good agreement with observed data in TMMC. Calculation of the eighth moment indicates that there will be no qualitative change by including this additional information.
- 理論物理学刊行会の論文
- 1974-05-25
著者
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Mashiyama Hiroyuki
Department Of Physics Biology And Informatics Faculty Of Science Yamaguchi University
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TOMITA Kazuhisa
Department fo Physics, Faculty of Science, Kyoto University
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Tomita Kazuhisa
Department Of Physics Faculty Of Science University Of Kyoto
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Mashiyama Hiroyuki
Department Of Physics Faculty Of Science University Of Kyoto
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MASHIYAMA Hiroyuki
Department of Physics, Faculty of Science, University of Kyoto
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Tomita Kazuhisa
Department of Physics, Faculty of Science, University of Kyoto
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