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      Universal Electromagnetic Waves in Dielectric

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          Abstract

          The dielectric susceptibility of a wide class of dielectric materials follows, over extended frequency ranges, a fractional power-law frequency dependence that is called the "universal" response. The electromagnetic fields in such dielectric media are described by fractional differential equations with time derivatives of non-integer order. An exact solution of the fractional equations for a magnetic field is derived. The electromagnetic fields in the dielectric materials demonstrate fractional damping. The typical features of "universal" electromagnetic waves in dielectric are common to a wide class of materials, regardless of the type of physical structure, chemical composition, or of the nature of the polarizing species, whether dipoles, electrons or ions.

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          Author and article information

          Journal
          2009-07-13
          0907.2163

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

          Custom metadata
          Journal of Physics: Condensed Matter 20 (2008) 175223
          19 pages, LaTeX
          physics.optics physics.class-ph

          Classical mechanics, Optical materials & Optics

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