Phys. Rev. Lett. |
Volume 90, Page
029303 |
2003 |
Comment
on “Wave Refraction in Negative-Index Media: Always Positive and Very
Inhomogeneous”
JB Pendry and D.R. Smith
In a recent Physical Review Letter [1] Valanju Walser and Valanju (VWV) called into question the basis of work on the so called negative index media (NIM). See for example [2,3]. The key point at issue is, ‘what is the group velocity of a wave in NIM?’. ….
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