Titlebook: Nonlinear Phenomena at Phase Transitions and Instabilities; T. Riste Book 1982 Springer Science+Business Media New York 1982 cluster.cryst

Catheter

,Investigation of Fluctuations and Oscillatory States in Rayleigh-Bénard Systems by Neutron Scatteril) scattering vector. There exists a well-known coupling between orientation and flow in nematics [1], and the onset and changes in the flow can be detected through the ensueing change in the molecular orientation.

温室

,A Rayleigh Bénard Experiment: Helium in a Small Box,rselves to the geometry of a small rectangular box with two or three convective rolls present. This somewhat artificial case allows us to truncate the degrees of freedom of the system and thus to define some simple bifurcations to turbulence.

残废的火焰

Nonlinear Excitations in some Anharmonic Lattice Models,ies of which were investigated in two recent papers.. In addition some results. for the Toda-lattice. will be discussed and compared with those found by Schneider and Stoll.. In these two examples the nature of nonlinear excitations will be clarified and their contribution to various physical quantities will be investigated.

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The Physical Mechanism of Oscillatory and Finite Amplitude Instabilities in Systems with Competing d from below, show oscillatory and finite amplitude instabilities. In this contribution I will discuss the common physical mechanism underlying these phenomena from the point of view of the energy balance of convective disturbances.

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PANEL

Pattern Formation during Crystal Growth: Theory,in, a marginal instability seems to play some role in pattern selection; but the situation is unclear at the moment. We shall see that there are possibilities for a variety of kinds of interesting behavior in these systems.

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