Numerical study of nonlinear periodic waves in dispersive media

1981 ◽  
Vol 17 (4) ◽  
pp. 361-366
Author(s):  
V. I. Gulyaev
Keyword(s):  
Numerical Study ◽  
Dispersive Media ◽  
Periodic Waves

Ray tracing in weakly nonlinear moving media

1976 ◽  
Vol 16 (3) ◽  
pp. 415-426 ◽  
Author(s):  
Dan Censor
Keyword(s):  
Velocity Field ◽  
Ray Tracing ◽  
Complete System ◽  
Dispersive Media ◽  
Periodic Waves ◽  
Weakly Nonlinear ◽  
Optical Media ◽  
Moving Media ◽  
Ray Path ◽  
Excitation Model

Electromagnetic ray propagation is discussed for weakly nonlinear dispersive media. Specialization to periodic waves justifies the use of a self-excitation model and facilitates the construction of a complete system of ray equations. The solution describes the evolution of frequencies, propagation vectors and amplitudes along the ray path. The formalism may be extended to include the case where a velocity field exists. This is based on special relativity and the Minkowski model for the electrodynamics of moving media. It is assumed that the velocity field varies slowly in space and time. The results are relevant to propagation problems in weakly nonlinear plasmas and optical media.

Numerical study of the low-frequency atomic dynamics in a Lennard-Jones glass

1998 ◽  
Vol 77 (2) ◽  
pp. 473-484 ◽  
Author(s):  
M. Sampoli, P. Benassi, R. Dell'Anna,
Keyword(s):  
Numerical Study ◽  
Low Frequency ◽  
Lennard Jones
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