具质量粒子

具质量粒子(massive particle)是指其静止质量为非零实数基本粒子。依照狭义相对论,这些粒子的速度都会比光速要慢[1],像质子中子电子都是具质量粒子。 同义词慢子(bradyon,源自希腊语βραδύς,或称为tardyon[2] 或ittyon[3])。

有时会用具质量粒子来和无质量粒子(其速度为光速)及假想的快子(其速度为超光速)对比。

暗物质

具质量粒子的分类中。包括了假想存在的大质量弱相互作用粒子稳定具质量粒子英语Stable massive particles,目前假想暗物质是由这些粒子所组成[4]

相关条目

参考资料

  1. ^ Folman, R.; Recami, E. On the Phenomenology of Tachyon Radiation. Foundations of Physics Letters. 1995, 8 (2): 127–134. Bibcode:1995FoPhL...8..127F. arXiv:hep-th/9508166 . doi:10.1007/BF02187583. 
  2. ^ Martin Gardner. Professor Cracker's Antitelephone. The Jinn From Hyperspace. 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. Particles beyond the Light Barrier. 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. How dark matter came to matter. Nature Astronomy. 2017, 1 (59): 0059. Bibcode:2017NatAs...1E..59D. S2CID 119092226. arXiv:1703.00013 . doi:10.1038/s41550-017-0059.