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Phys. Rev. E 63, 020102(R) (2001) [4 pages]

Short-time dynamics with initial correlations

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K. Morawetz1, M. Bonitz2, V. G. Morozov3, G. Röpke2, and D. Kremp2
1Max-Planck-Institut für Physik komplexer Systeme, Noethnitzer Strasse 38, 01187 Dresden, Germany
2Fachbereich Physik, University Rostock, D-18055 Rostock, Germany
3Department of Physics, Moscow Institute RAE, Vernadsky Prospect 78, 117454, Moscow, Russia

Received 7 May 1999; published 11 January 2001

The short-time dynamics of correlated systems is strongly influenced by initial correlations, giving rise to an additional collision integral in the non-Markovian kinetic equation. Exact cancellation of the two integrals is found if the initial state is thermal equilibrium, which is an important consistency criterion. Analytical results are given for the time evolution of the correlation energy, which are confirmed by comparisons with molecular dynamics simulations.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevE.63.020102
DOI:
10.1103/PhysRevE.63.020102
PACS:
05.60.-k, 05.20.Dd, 02.50.Ga
 
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