Comment on "Relativistic Effects of Light in Moving Media with Extremely Low Group Velocity"

Дата и время публикации : 2000-02-02T19:59:08Z

Авторы публикации и институты :
Matt Visser (Washington University in Saint Louis)

Ссылка на журнал-издание: Phys.Rev.Lett. 85 (2000) 5252
Коментарии к cтатье: one page comment, uses ReV_TeX 3; discussion clarified; basic physical results unaltered
Первичная категория: gr-qc

Все категории : gr-qc, cond-mat.soft, physics.optics

Краткий обзор статьи: In [cond-mat/9906332; Phys. Rev. Lett. 84, 822 (2000)] and [physics/9906038; Phys. Rev. A 60, 4301 (1999)] Leonhardt and Piwnicki have presented an interesting analysis of how to use a flowing dielectric fluid to generate a so-called "optical black hole". Qualitatively similar phenomena using acoustical processes have also been much investigated. Unfortunately there is a subtle misinterpretation in the Leonhardt-Piwnicki analysis regarding these "optical black holes": While it is clear that "optical black holes" can certainly exist as theoretical constructs, and while the experimental prospects for actually building them in the laboratory are excellent, the particular model geometries that Leonhardt and Piwnicki write down as alleged examples of "optical black holes" are in fact not black holes at all.

Category: Physics