Dielectric Function in Meep are usually parametrized as eps_inf + Sum_n[( sigma_n(*x*) w_n Deps_n )/( (w_n)^2 - w^2 - i w gamma_n )]
now in a recent publication (chemical physics letter 446 (2005) 115-118) an efficient parametrization of silver and gold dielectric function has been introduced, which is similar to the MEEP one, except for the additional term of the form: sigma/(i w eps_0) that this with a simple omega at the first power at the denominator. There is a way to introduce such a frequency dependence in a the MEEP dielectric function? Thanks Giovanni
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