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The propagation of electromagnetic waves in unmagnetized periodic plasma media is studied using the semiclassical wave packet approximation. The formalism gives rise to Berry effect terms in the equation of motion. The Berry effect manifests itself as Rytov polarization rotation law and the polarization-dependent Hall effect. The formalism is also applied to the case of non-periodic inhomogeneous plasma media.

An exact solution is introduced for one dimensional space-fractional Edwards-Wilkinson equation. It is shown that the roughness obeys the Family-Viscek dynamic scaling form and the scaling exponents is derived. It is seen that the scaling exponents are different from those coming from ordinary Edwards-Wilkinson equation and depend on the fractional order. Scaling exponents in the presence of correlated noise is also obtained.