منابع مشابه
Basics of superluminal signals
The paper elucidates the physical basis of experimental results on superluminal signal velocity. It will be made plausible that superluminal signals do not violate the principle of causality but they can shorten the vacuum time span between cause and effect. The causal behaviour is based on the property that a physical signal has a finite duration as a result of its frequency band limitation.
متن کاملSuperluminal signals: an engineer’s perspective
Recent experiments with evanescent waveguide modes demonstrated the existence of superluminal group velocities. The still ongoing debate concerning the definition of an appropriate signal velocity is revisited, and a case study of a raised cosine signal is presented to investigate the practical relevance of superluminal signals. 2001 Elsevier Science B.V. All rights reserved. PACS: 41.20.Jb; ...
متن کاملSuperluminal Signals: Causal Loop Paradoxes Revisited
The idea of \tachyons", i.e., particles that travel in the vacuum faster than light, has been the source of controversy for many years. Although special relativity does not strictly outlaw tachyons [1{3], the interaction of tachyons with ordinary matter does raise di cult questions. One of these is the possibility of violating the familiar relativistic prohibition of faster-than-light (superlum...
متن کاملQuantum Entanglement and the Nonexistence of Superluminal Signals
This paper shows that ordinary quantum mechanics is not consistent with the superluminal transmission of classical information. PACS numbers: 03.65.Bz, 42.50.Dv, 89.70.+c
متن کاملConditions for the Generation of Causal Paradoxes from Superluminal Signals
We introduce a simple method to illustrate how the Lorentz transformation lead to causal loop paradoxes when they are applied to superluminal velocities. c © Electronic Journal of Theoretical Physics. All rights reserved.
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ژورنال
عنوان ژورنال: Annalen der Physik
سال: 2002
ISSN: 0003-3804,1521-3889
DOI: 10.1002/1521-3889(200202)11:2<163::aid-andp163>3.0.co;2-q