Massive particle
The physics technical term massive particle refers to a massful particle which has real non-zero rest mass (such as baryonic matter), the counter-part to the term massless particle. According to special relativity, the velocity of a massive particle is always less than the speed of light.[1] When highlighting relativistic speeds, the synonyms bradyon (from Greek: βραδύς, bradys, “slow”), tardyon[2] or ittyon[3] are sometimes used to contrast with luxon (which moves at light speed) and hypothetical tachyon (which moves faster than light).
Dark matter
[edit]Types of massive particles include weakly interacting and stable massive particles, which are hypothesized to constitute dark matter.[4]
See also
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References
[edit]- ^ Ron Folman; Erasmo Recami (1995). "On the Phenomenology of Tachyon Radiation". Foundations of Physics Letters. 8 (2): 127–134. arXiv:hep-th/9508166. Bibcode:1995FoPhL...8..127F. doi:10.1007/BF02187583. S2CID 2758139.
- ^ Martin Gardner (2008) [originally published February 1980]. "Professor Cracker's Antitelephone". The Jinn From Hyperspace. Prometheus Books. p. 119. ISBN 978-1-59102-565-8.
Just as ordinary particles ('tardyons') can never be accelerated to the speed of light, so tachyons can never be slowed down to the speed of light.
- ^ Olexa-Myron Bilaniuk; E.C. George Sudarshan (1969). "Particles beyond the Light Barrier". Physics Today. 22 (5): 43–51. Bibcode:1969PhT....22e..43B. doi:10.1063/1.3035574.
- ^ de Swart, J. G.; Bertone, G.; van Dongen, J. (2017). "How dark matter came to matter". Nature Astronomy. 1 (59): 0059. arXiv:1703.00013. Bibcode:2017NatAs...1E..59D. doi:10.1038/s41550-017-0059. S2CID 119092226.
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