Ray and wave chaos in asymmetric resonant optical cavities
Article Abstract:
Substantial deformation of the cavity of optical resonators from cylindrical or spherical symmetry leads to partially chaotic ray dynamics. This had been predicted to cause universal, frequency independent broadening of the whispering gallery resonances and to highly anisotropic emission. The study presents solutions of wave equations for asymmetric resonant cavities which confirm these predictions and also reveal frequency dependent effects typical of quantum chaos.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Uniform resonant chaotic mixing in fluids flows
Article Abstract:
Experimental and numerical studies of mixing in a laminar vortex flow that is weakly 3D and weakly time-periodic is documented. Theoretically, it is revealed that for time-dependent 3D flows, completely uniform mixing can possibly occur through singularity-induced diffusion, a resonant mechanism, even at infinitesimally small time-dependent and 3D perturbations.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2003
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Kinks and circuits
Article Abstract:
A debate on the relative fixity of hot spots, the rigidity of tectonic plates and fluid dynamics of the mantle wind is presented with reference to the work of Steinberger et al. It is reported that flow in the Earth's mantle buffets Earth's mantle buffets ascending mantle plumes, causes surface 'hot-spots' to move relative to each other.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
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