Radiation from a uniformly accelerated charge in the outskirts of a wormhole throat

Citation
La. Anchordoqui et al., Radiation from a uniformly accelerated charge in the outskirts of a wormhole throat, MOD PHY L A, 15(36), 2000, pp. 2219-2228
Citations number
34
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
MODERN PHYSICS LETTERS A
ISSN journal
0217-7323 → ACNP
Volume
15
Issue
36
Year of publication
2000
Pages
2219 - 2228
Database
ISI
SICI code
0217-7323(20001130)15:36<2219:RFAUAC>2.0.ZU;2-M
Abstract
Using traversable wormholes as theoretical background, we revisit a deep qu estion of general relativity: Does a uniformly accelerated charged particle radiate? We particularize to the recently proposed gravitational Cerenkov radiation, that happens when the spatial part of the Ricci tensor is negati ve. If R-(3+1)(i)i < 0, the matter threading the gravitational field violat es the weak energy condition. In this case, the effective refractive index for light is larger than 1, i.e. particles propagate faster than photons in that medium. This leads to a violation of the equivalence principle.