Response to 'On negative refraction in classical vacuum'

Tom G. Mackay, Akhlesh Lakhtakia

Research output: Contribution to journalArticlepeer-review

Abstract

An analysis [McCall, M.W.J. Mod. Opt. 2007, 54, 119-128] based on the electromagnetic energy-momentum tensor, to explore the prospects for negative-phase-velocity (NPV) propagation in gravitationally affected vacuum, did not consider (i) the total energy-momentum tensor and (ii) the global perspective of curved spacetime. Also, the appearance of NPV was wrongly attributed to a change in signature of the spacetime metric.

Original languageEnglish
Pages (from-to)323-328
Number of pages6
JournalJournal of modern optics
Volume55
Issue number2
DOIs
Publication statusPublished - 2008

Keywords

  • ROTATING BLACK-HOLE
  • PHASE-VELOCITY PROPAGATION
  • TRAVERSABLE WORMHOLES
  • ELECTROMAGNETIC-WAVES
  • GENERAL RELATIVITY
  • ENERGY
  • ERGOSPHERE
  • FIELDS
  • LIGHT

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