Results 221 to 230 of about 6,206 (259)

Traveling waves and chaos in thermosolutal convection

Physical Review A, 1987
Numerical experiments on two-dimensional thermosolutal convection reveal oscillations in the form of traveling, standing, modulated, and chaotic waves. Transitions between these wave forms and steady convection are investigated and compared with theory.
, Deane, , Knobloch, , Toomre
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Genuine electromagnetic wave chaos

Physical Review E, 1995
The existence of genuine electromagnetic wave chaos is predicted. The prediction is based on a general nonlinear mechanism that destroys the superposition principle in case the electromagnetic field is allowed to interact dynamically with its boundary. Strong support for this prediction is derived from various model calculations.
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Spatiotemporal chaos involving wave instability

Chaos: An Interdisciplinary Journal of Nonlinear Science, 2017
In this paper, we investigate pattern formation in a model of a reaction confined in a microemulsion, in a regime where both Turing and wave instability occur. In one-dimensional systems, the pattern corresponds to spatiotemporal intermittency where the behavior of the systems alternates in both time and space between stationary Turing patterns and ...
Igal Berenstein, Jorge Carballido-Landeira   +1 more
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Controlling chaos in spin-wave instabilities

Physical Review Letters, 1991
A microwave-pumped spin-wave-instability experiment is used to demonstrate that chaos can be controlled by a small periodic perturbation of an available system parameter, as recently proposed by Ott, Grebogi, and Yorke. The experiment is performed in an yttrium-iron-garnet sphere in the subsidiary-resonance configuration with a small modulation in the ...
, Azevedo, , Rezende
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Chaos-induced intensification of wave scattering

Physical Review E, 2005
Sound-wave propagation in a strongly idealized model of the deep-water acoustic waveguide with a periodic range dependence is considered. It is investigated how the phenomenon of ray and wave chaos affects the sound scattering at a strong mesoscale inhomogeneity of the refractive index caused by the synoptic eddy.
I P, Smirnov, A L, Virovlyansky, M, Edelman, G M, Zaslavsky   +3 more
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Bifurcations, chaos and control of chaos in spin-wave instabilities

Journal of Magnetism and Magnetic Materials, 1992
Abstract An experimental study of microwave pumped spin-wave instabilities in YIG reveals new types of bifurcations and the possibility of controlling chaos with a small perturbation in a system parameter.
Antonio Azevedo, Sergio M. Rezende
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A possible plasma wave chaos

Physics of Fluids B: Plasma Physics, 1990
A model equation for the ionization wave (Duffing’s equation) is studied. The system shows chaotic behavior via an intermittent route to chaos. It is left for experimentalists to devise experiments to test the theoretical predictions.
Mitsuhiro Nambu, Tetsuji Kawabe
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Wave Chaos in Elastodynamics

2001
Recent years have demonstrated that ultrasonic waves in solids permit investigations of wave chaos, reverberation and multiple scattering that complement those of microwaves, optics and electronics. The large quality factors that can be achieved with elastic waves, their relatively slow wave speed, and their good impedance mismatch with the laboratory,
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Wave chaos in singular quantum billiard

Physical Review Letters, 1990
Summary: We present a solvable singular quantum billiard which displays fully developed wave chaos. Its level statistics is investigated and proved to coincide with predictions of the Gaussian orthogonal ensemble of random matrices. The corresponding wave functions are shown to be well approximated by a Gaussian ransom variable.
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Wave chaos in acoustics and elasticity

Journal of Physics A: Mathematical and Theoretical, 2007
Interpreting wave phenomena in terms of an underlying ray dynamics adds a new dimension to the analysis of linear wave equations. Forming explicit connections between spectra and wavefunctions on the one hand and the properties of a related ray dynamics on the other hand is a comparatively new research area, especially in elasticity and acoustics.
Gregor Tanner, Niels Søndergaard
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