Negative phase velocity of electromagnetic waves and the cosmological constant

T. G. Mackay; S. Setiawan; A. Lakhtakia

doi:10.1140/epjcd/s2005-01-001-9

Negative phase velocity of electromagnetic waves and the cosmological constant

T. G. Mackay, S. Setiawan, A. Lakhtakia

Engineering Science and Mechanics

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

Examining the propagation of electromagnetic plane waves with the wavevector directed in opposition to the time-averaged Poynting vector in cosmological spacetime with piecewise uniform metric, we show that such negative-phase-velocity (NPV) propagation is possible in certain de Sitter spacetimes but not in anti-de Sitter spacetimes. This difference suggests the possibility of an optical/electromagnetic experiment to discern the cosmological constant of a four-dimensional universe stemming from a five-dimensional brane universe.

Original language	English (US)
Pages (from-to)	1-4
Number of pages	4
Journal	European Physical Journal C
Volume	41
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1140/epjcd/s2005-01-001-9
State	Published - Jul 2005

All Science Journal Classification (ASJC) codes

Engineering (miscellaneous)
Physics and Astronomy (miscellaneous)

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10.1140/epjcd/s2005-01-001-9

Cite this

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Negative phase velocity of electromagnetic waves and the cosmological constant

Abstract

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