Comment on "Energy Velocity of Diffusion Waves in Strongly Scattering Media"
C.M. Soukoulis, K. Busch, M. Kafesaki, and E.N. Economou
TL;DR
This paper discusses the validity of a recent effective medium theory for diffusion waves in strongly scattering media, questioning whether a unique self-consistent effective medium can be determined.
Contribution
It critically examines the energy density homogenization approach in the context of effective medium theories for diffusion waves.
Findings
Questions the uniqueness of the effective medium in random media
Analyzes the principles behind energy density homogenization
Highlights potential limitations of the recent theory
Abstract
A comment on the recently published article (PRL 79, 3166 (1997)) is given. The issue is if there is a unique self-consistent way in determining the effective medium in a random medium. The recently introduced effective medium theory (PRL 75, 3442 (1995)) based on the principle of energy density homogenization is also discussed.
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Taxonomy
TopicsSeismic Waves and Analysis · Gas Dynamics and Kinetic Theory · Thermoelastic and Magnetoelastic Phenomena