Cherenkov radiation of superluminal particles

Daniel Rohrlich, Yakir Aharonov

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

Any charged particle moving faster than light through a medium emits Cherenkov radiation. We show that charged particles moving faster than light through the vacuum emit Cherenkov radiation. How can a particle move faster than light? The weak speed of a charged particle can exceed the speed of light. By definition, the weak velocity [Formula Presented] is [Formula Presented] where [Formula Presented] is the velocity operator and [Formula Presented] and [Formula Presented] are, respectively, the states of a particle before and after a velocity measurement. We discuss the consistency of weak values and show that superluminal weak speed is consistent with relativistic causality. 5555 2002 The American Physical Society.

Original languageEnglish GB
Pages (from-to)421021-421027
Number of pages7
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume66
Issue number4
DOIs
StatePublished - 1 Jan 2002
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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