具質量粒子

具質量粒子(massive particle)是指其靜止質量為非零实数基本粒子。依照狭义相对论,這些粒子的速度都會比光速要慢[1],像質子中子電子都是具質量粒子。 同義詞慢子(bradyon,源自希臘語,或稱為tardyon[2] 或ittyon[3])。

有時會用具質量粒子來和無質量粒子(其速度為光速)及假想的快子(其速度為超光速)對比。

暗物質

具質量粒子的分類中。包括了大质量弱相互作用粒子穩定具質量粒子,目前假想暗物质是由這些粒子所組成[4]

相關條目

參考資料

  1. Folman, R.; Recami, E. . Foundations of Physics Letters. 1995, 8 (2): 127–134. Bibcode:1995FoPhL...8..127F. arXiv:hep-th/9508166可免费查阅. doi:10.1007/BF02187583.
  2. Martin Gardner. . . Prometheus Books. 2008: 119 [originally published February 1980]. 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.
  3. Olexa-Myron Bilaniuk; E.C. George Sudarshan. . Physics Today. 1969, 22 (5): 43–51. Bibcode:1969PhT....22e..43B. doi:10.1063/1.3035574.
  4. de Swart, J. G.; Bertone, G.; van Dongen, J. . Nature Astronomy. 2017, 1 (59): 0059. Bibcode:2017NatAs...1E..59D. S2CID 119092226. arXiv:1703.00013可免费查阅. doi:10.1038/s41550-017-0059.
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