tachyon

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tach·y·on

 (tăk′ē-ŏn′)
n.
A hypothetical subatomic particle that always travels faster than the speed of light.

tach′y·on′ic adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

tachyon

(ˈtækɪˌɒn)
n
(Nuclear Physics) physics a hypothetical elementary particle capable of travelling faster than the velocity of light
[C20: from tachy- + -on]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

tach•y•on

(ˈtæk iˌɒn)

n.
a hypothetical subatomic particle that travels faster than the speed of light.
[1967; < Greek tachý(s) swift]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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He has made remarkable discoveries in many fields of physics, including quantum optics, tachyons, quantum Zeno effect, non-invariance groups, positive maps of density matrices, quantum computation, etc.
The existence of tachyons in higher dimensions has been thoroughly studied by Davidson and Owen [32].
About Lorentz transformations and tachyons. Lettere al Nuovo Cimento, 1971, v.
(4) Using the Feynman path integral (PI) approach to quantum field theory that includes particles emerging from the vacuum going faster-than-light, I speculate that there are two basic quantum fields: a real Higgs field capable of generating real positive mass particles (fermions) and an imaginary Higgs field capable of generating mind-like imaginary mass particles (tachyons).
Finally he turns to "pastels," or the most exotic particles scientists think exist that take us well beyond the pale of ordinary experience: higgs bosons, squarks, tachyons, gravitons, and more.
And years of watching Star Trek have taught me all I need to know about tachyons, the theoretical particles that may also travel faster than light.
What if, he suggested, neutrinos are actually members of the thus-far theoretical class of particles known as tachyons, which - at least on the computer - can exceed the speed of light.
This week I learned about "tachyons," which are some kind of particles that if I understood quantum physics would be as easy to comprehend as rain.
Table 1 Meta-models of moving environmental system (the types of description in terms of physics) Movement level Subsystem System Super-system [right arrow] Description level (week changes (strong or (catastrophic [down arrow] of a system) critical changes of a changes of system) a system) Subsystem Thermodynamics Non-equilibrium Super-non- Thermodynamics equilibrium thermodynamics (?) Chaos Theory (?) System Quantum Theory Classic Relativistic Mechanics Mechanics and Mechanics of tachyons (super-light velocities) Super-system Super-Quantum Relativistic "Tachyon" Theory (?) Quantum Theory Quantum Theory (?)
1999: Scientists prove that time flows at different rates in different parts of the universe; in the case of tachyons (theoretical particles that move faster than light), time even moves backwards.
Furthermore, one reads about present speculations on tachyons (hypothetical particles that always travel faster than the speed of light), wavicles (bodies with properties that behave like waves or particles depending on the detector used), non-locality, alternate histories, parallel universes, and subquantum hidden variables.
Tolman suggested that the existence of particles which travel faster than the speed of light, called tachyons, would lead to paradox.