Document Detail


Classical gravity does not refract negatively.
MedLine Citation:
PMID:  17359145     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
We appraise recent claims that classical gravitation can induce negative refraction of electromagnetic radiation in vacuum. By recasting the previous literature in covariant notation, we show that the criterion used hitherto for determining negative refraction in vacuum is inappropriate, and can even be satisfied by parametrized transformations in Minkowski spacetime. Using instead a covariantly acceptable definition, we find that in classical vacuum the power flux of a plane electromagnetic wave points in the direction of phase advance.
Authors:
Martin W McCall
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Publication Detail:
Type:  Journal Article     Date:  2007-03-02
Journal Detail:
Title:  Physical review letters     Volume:  98     ISSN:  0031-9007     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2007 Mar 
Date Detail:
Created Date:  2007-03-15     Completed Date:  2007-07-05     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  091102     Citation Subset:  -    
Affiliation:
Department of Physics, The Blackett Laboratory Imperial College of Science, Technology and Medicine, Prince Consort Road, London SW7 2AZ, United Kingdom.
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