On mediums with negative phase velocity: a brief overview
classification
⚛️ physics.class-ph
cond-mat.otherphysics.gen-phphysics.optics
keywords
mediumsphasevelocityaberration-freeapproachesbriefcomplexcondition
read the original abstract
Several issues relating to oppositely directed phase velocity and power flow are reviewed. A necessary condition for the occurrence of this phenomenon in isotropic dielectric-magnetic mediums is presented. Ramifications for aberration-free lenses, homogenization approaches, and complex mediums are discussed.
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