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Title
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Long-time tail of the velocity-autocorrelation function in the Lorentz lattice gas
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Author
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Abstract
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| We present numerical results for the first and second moments of the distribution of collision times of the d=2 Lorentz lattice gas with density q in the range 0.20.8. They are used to calculate the mean-square displacement 〈X2(Tk)〉 as a function of the number of collisions k. Using an asymptotic relation the mean-square displacement 〈X2(t)〉 as function of time is obtained from the latter quantity. As a result we are able to predict in an accurate numerical way the long-time tail of the velocity-autocorrelation function. |
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Language
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English
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Source (journal)
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Physical review : A : atomic, molecular and optical physics. - Lancaster, Pa, 1990 - 2015
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Publication
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Lancaster, Pa
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1990
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ISSN
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1094-1622
[online]
1050-2947
[print]
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DOI
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10.1103/PHYSREVA.41.3415
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Volume/pages
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41
(1990)
, p. 3415-3418
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ISI
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A1990CV83100069
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Full text (Publisher's DOI)
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