Beyond the effective medium: quasi modes in disordered media

Ping Sheng, Xiaodun Jing and Minyao Zhou

Physica A: Statistical Mechanics and its Applications, 1994, vol. 207, issue 1, 37-45

Abstract: For wave propagation in disordered media, the intermediate frequency regime is defined as the frequency range where the wavelength is comparable to the scale of the inhomogeneities. While difficult to treat theoretically, the regime is rich in physical phenomena. The focus of this paper is the transport characteristics of the coherent part of the wave energy in the intermediate frequency range. Through a re-formulation of the well-known coherent potential approximation, a new scheme is developed which is capable of identifying the quasi wave modes as well as yielding their dispersion relations. With no adjustable parameter, this scheme is demonstrated to give an excellent quantitative of the experimental data that showed two branches of the acoustic wave in colloidal suspensions. The new approach is used to predict the quasi modes in a random collection of metallic spheres.

Date: 1994
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/0378437194903522
Full text for ScienceDirect subscribers only. Journal offers the option of making the article available online on Science direct for a fee of $3,000

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:207:y:1994:i:1:p:37-45

DOI: 10.1016/0378-4371(94)90352-2

Access Statistics for this article

Physica A: Statistical Mechanics and its Applications is currently edited by K. A. Dawson, J. O. Indekeu, H.E. Stanley and C. Tsallis

More articles in Physica A: Statistical Mechanics and its Applications from Elsevier
Bibliographic data for series maintained by Catherine Liu ().