Study of harmonic crystal momentum autocorrelation and fluctuation functions

The mean-squared fluctuation of the momentum autocorrelation of a defect particle in a harmonic crystal was calculated. It was found that non-equilibrium fluctuations approach their equilibrium values faster than do the corresponding average correlations.

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Bibliographic Details
Published in:Chemical physics letters 1988-10, Vol.151 (4), p.431-433
Main Authors: Wilson, R.S., Chu-Ko, B.J.
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Lattice dynamics
Phonons and vibrations in crystal lattices
Physics
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Description
Summary:The mean-squared fluctuation of the momentum autocorrelation of a defect particle in a harmonic crystal was calculated. It was found that non-equilibrium fluctuations approach their equilibrium values faster than do the corresponding average correlations.
ISSN:0009-2614
1873-4448
DOI:10.1016/0009-2614(88)85163-7