Abstract
We study wave propagation in a disordered system of scatterers and derive a renormalized cluster expansion for the optical potential or self-energy of the average wave. We show that in the problem of multiple scattering a repetitive structure of Ornstein-Zernike type may be detected. We derive exact expressions for two elementary constituents of the renormalized scattering series, called the reaction field operator and the short-range connector. These expressions involve sums of integrals of a product of a chain correlation function and a nodal connector. We expect that approximate calculation of the reaction field operator and the short-range connector allows one to find a good approximation to the self-energy, even for high density of scatterers. The theory applies to a wide variety of systems.
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Cichocki, B., Felderhof, B.U. Renormalized cluster expansion for multiple scattering in disordered systems. J Stat Phys 51, 57–76 (1988). https://doi.org/10.1007/BF01015320
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DOI: https://doi.org/10.1007/BF01015320