Gravitation and electromagnetic wave propagation with negative phase velocity

被引：39
|
作者：
Mackay, TG [1 ]
Lakhtakia, A
Setiawan, S
机构：
[1] Univ Edinburgh, Sch Math, Edinburgh EH9 3JZ, Midlothian, Scotland
[2] Penn State Univ, CATMAS Computat & Theoret Mat Sci Grp, Dept Engn Sci & Mech, University Pk, PA 16802 USA
[3] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2BZ, England
来源：
NEW JOURNAL OF PHYSICS | 2005年 / 7卷
基金：
英国工程与自然科学研究理事会;
关键词：
D O I：
10.1088/1367-2630/7/1/075
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Gravitation has interesting consequences for electromagnetic wave propagation in vacuum. The propagation of plane waves with phase velocity directed opposite to the time-averaged Poynting vector is investigated for a generally curved spacetime. Conditions for such negative-phase-velocity (NPV) propagation are established in terms of the spacetime metric components for general and special cases. Implications of the negative energy density of NPV propagation are discussed.
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页数：14
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