Dynamics of classical wave scattering by small obstacles.
A causality problem in the time-dependent scattering of classical waves from point scatterers is pointed out and analyzed. Based on an alternative model, the leading pole approximation of the exact scattering matrix of the square-well potential, transparent expressions for the time- and position-dependent Green function in a disordered medium are derived.
Bauer
G E
GE
Theoretical Physics Group, Department of Applied Physics and Delft Institute of Microelectronics and Submicron Technology, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands.
Ferreira
M S
MS
Wapenaar
C P
CP