 98269 F. Bonetto, N.I. Chernov, J.L. Lebowitz
 Global and Local) Fluctuations of Phase Space Contraction in
Deterministic Stationary Nonequilibrium
(287K, ps)
Apr 10, 98

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Abstract. We studied numerically the validity of the fluctuation theorem
introduced in \cita{ECM2}\cita{GC} for a 2dimensional system of particles
maintained in a steady shear flow by Maxwell daemon boundary conditions
\cita{CL}. The theorem was found to hold if one considers the total
phase space contraction $\sigma$ occuring at collisions with both
walls: $\sigma=\sigma^\su+\sigma^\giu$. An attempt to extend it to
more local quantities $\sigma^\su$ and $\sigma^\giu$, corresponding to
the collisions with the top or bottom wall only, gave negative
results. The time decay of the correlations in $\sigma^{\su,\giu}$ was
very slow compared to that of $\sigma$.
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