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Journal of Mathematical Physics

On Wave Propagation In Inhomogeneous Media

K. M. Case

Published Mar 1, 1972• 31 citations
Publisher

Abstract

Familiar relations between phase and group velocity for wave propagation in homogeneous media are generalized to the inhomogeneous case. The constant velocity ``c'' is merely replaced by an appropriate weighted average. The key tool lies in the stationary property of the frequency as a functional of the wavefunction.
DOI
10.1063/1.1665986

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