منابع مشابه
Transfer matrix of a spherical scatterer.
It was recently recognized that the internal structure of scatterers can significantly alter the picture of wave propagation and localization in random media. When the size of scatterers cannot be neglected, scattering is anisotropic and a ‘‘dwell time’’ for waves appears in addition to the time of flight between scattering. This substantially modifies such parameters describing wave propagatio...
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We derive the off-shell scattering matrix for a spherical scatterer. The result obtained generalizes the off-on-shell matrix commonly used in the theory of scalar waves propagation in random media.
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A spherical acoustic wave is scattered by a bounded obstacle. A generalization of the ‘optical theorem’ (which relates the scattering cross-section to the far-field pattern in the forward direction for an incident plane wave) is proved. For a spherical scatterer, lowfrequency results are obtained by approximating the known exact solution (separation of variables). In particular, a closed-form a...
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15 صفحه اولSpherical membranes in Matrix theory
We consider membranes of spherical topology in uncompactified Matrix theory. In general for large membranes Matrix theory reproduces the classical membrane dynamics up to 1/N corrections; for certain simple membrane configurations, the equations of motion agree exactly at finite N . We derive a general formula for the one-loop Matrix potential between two finite-sized objects at large separatio...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 1996
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.54.12125