Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2003-02-18
Physica Scripta (Sweden) Vol.68, p.87-97 (2003)
Physics
Condensed Matter
Statistical Mechanics
9 pages, Latex
Scientific paper
10.1238/Physica.Regular.068a0008
The connections between the anti-shielding effect, negative absolute temperature and superluminal light propagation in both the instantaneously reversed electric field and the left-handed media are considered in the present paper. The instantaneous inversion of the exterior electric field may cause the electric dipoles into the state of negative absolute temperature and therefore give rise to a negative effective mass term of electromagnetic field (i. e., the electromagnetic field propagating inside the negative-temperature medium will acquire an imaginary rest mass), which is said to result in the potential superluminality effect of light propagation in this anti-shielding dielectric. In left-handed media, such phenomena may also arise.
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