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DY: Dynamik und Statistische Physik
DY 47: Kollektive Prozesse
DY 47.2: Talk
Thursday, March 30, 2000, 17:15–17:30, H3
Stability and Branching of Shocks — •Gunter M. Schütz1 and Vladislav Popkov1,2 — 1Institut für Festkörperforschung, Forschungszentrum Jülich, 52425 Jülich, Germany — 2Institute for Low Temperature Physics, 31064 Kharkov, Ukraine
By studying the diffusive motion of localized perturbations
within a stationary region of a driven many-particle system with
stochastic dynamics we obtain a simple criterion for the
stability of shock fronts [1]. It turns out that depending on
the macroscopic current-density relation single shocks may
branch into two distinct shocks [2].
[1] G.M. Schütz, Exactly Solvable Models for Many-Body
Systems Far From Equilibrium,
to appear in Phase Transitions and Critical Phenomena,
ed. C. Domb and J. Lebowitz, (Academic, London, 2000).
[2] V. Popkov and G.M. Schütz, Europhys. Lett. 48,
257 (1999).