具質量粒子
具質量粒子(massive particle)是指其靜止質量為非零实数的粒子。依照狭义相对论,這些粒子的速度都會比光速要慢[1]。同義詞慢子(bradyon,源自from 希臘語:,tardyon或ittyon)[2] 有時會用來和無質量粒子(其速度為光速)及假想的快子(其速度為超光速)對比。
參考資料
- Folman, R.; Recami, E. . Foundations of Physics Letters. 1995, 8 (2): 127–134. Bibcode:1995FoPhL...8..127F. arXiv:hep-th/9508166 [hep-th]. doi:10.1007/BF02187583.
- Bilaniuk, O.-M.P.; Sudarshan, E.C.G. . Physics Today. 1969, 22 (5): 43–51. Bibcode:1969PhT....22e..43B. doi:10.1063/1.3035574.
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