Causality and the Keller approximation for acoustic waves
- 1 March 1986
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 59 (5) , 1456-1457
- https://doi.org/10.1063/1.336499
Abstract
A method is presented for specifying the physically meaningful high-frequency wave velocity (the geometric limit) in the context of the Keller approximation, which describes wave propagation in a weakly inhomogeneous medium. The root regularly chosen is shown to violate causality of the coherent wave.This publication has 6 references indexed in Scilit:
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