dorsal/arxiv
View SchemaCherenkov radiation and superluminal particles
| Authors | Daniel Rohrlich, Yakir Aharonov |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0107025 |
| URL | https://arxiv.org/abs/quant-ph/0107025 |
| DOI | 10.1103/PhysRevA.66.042102 |
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 v a c u u m emit Cherenkov radiation. How can a particle move faster than light? The w e a k speed of a charged particle can exceed the speed of light. By definition, the weak velocity is <b|v|a>/<b|a> where v is the velocity operator and |a> and |b> 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.
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"abstract": "Any charged particle moving faster than light through a medium emits\nCherenkov radiation. We show that charged particles moving faster than light\nthrough the v a c u u m emit Cherenkov radiation. How can a particle move\nfaster than light? The w e a k speed of a charged particle can exceed the speed\nof light. By definition, the weak velocity is \u003cb|v|a\u003e/\u003cb|a\u003e where v is the\nvelocity operator and |a\u003e and |b\u003e are, respectively, the states of a particle\nbefore and after a velocity measurement. We discuss the consistency of weak\nvalues and show that superluminal weak speed is consistent with relativistic\ncausality.",
"arxiv_id": "quant-ph/0107025",
"authors": [
"Daniel Rohrlich",
"Yakir Aharonov"
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"quant-ph"
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"doi": "10.1103/PhysRevA.66.042102",
"title": "Cherenkov radiation and superluminal particles",
"url": "https://arxiv.org/abs/quant-ph/0107025"
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