TACHYONLIKE EXCITATIONS IN INVERTED 2-LEVEL MEDIA

Authors
CHIAO RY KOZHEKIN AE KURIZKI G
Citation
Ry. Chiao et al., TACHYONLIKE EXCITATIONS IN INVERTED 2-LEVEL MEDIA, Physical review letters, 77(7), 1996, pp. 1254-1257
Citations number
25
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
77
Issue
7
Year of publication
1996
Pages
1254 - 1257
Database
ISI
SICI code
0031-9007(1996)77:7<1254:TEII2M>2.0.ZU;2-R
Abstract
Electromagnetic fields dressed by inverted two-level atoms become tach yonlike excitations with group velocities which are faster than c, inf inite, or negative. Such excitations describe the stable modes of the medium when it is weakly probed off resonance. The launching of these tachyonlike excitations is discussed, along with a proposed experiment to observe them. Their existence does not violate Einstein causality.