Partikel bermassa: Perbedaan antara revisi

Dalam [[fisika kuantum]], '''partikel bermassa''' merujuk pada partikel yang memiliki massa diam [[Bilangan riil|riil]] bukan nol (seperti [[Barion|materi barionik]]), lawan kata dari istilah [[partikel tak bermassa]]. Menurut [[relativitas khusus]], laju partikel bermassa selalu lebih kecil dari [[laju cahaya]].<ref name="Folman1995">{{cite journal |author1=Ron Folman |author2=Erasmo Recami |title=On the Phenomenology of Tachyon Radiation |arxiv=hep-th/9508166 |year=1995 |journal=Foundations of Physics Letters |volume=8 |issue=2 | pages=127–134 |doi=10.1007/BF02187583 |bibcode=1995FoPhL...8..127F |s2cid=2758139}}</ref> Ketika menyoroti kecepatanlaju relativistikrelativistis, sinonim '''bradyon''' (dari {{lang|grc|[[Wiktionary:βραδύς|βραδύς]]}}, ''bradys'', “lambat”), '''tardyon'''<ref name="Gardner1980">{{cite book |author=[[Martin Gardner]] |publisher=Prometheus Books |year=2008 |origyear=originally published February 1980 |chapter=Professor Cracker's Antitelephone |title=The Jinn From Hyperspace |page=119 |isbn=978-1-59102-565-8 |url=https://archive.org/details/jinnfromhyperspa0000gard_p6l9/page/119 |quote=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.}}</ref> atau '''ittyon'''<ref name="Bilaniuk1969">{{cite journal |author1=Olexa-Myron Bilaniuk |author2=E.C. George Sudarshan |title=Particles beyond the Light Barrier |journal=Physics Today |volume=22 |issue=5 |pages=43–51 |year=1969 |doi=10.1063/1.3035574 |bibcode = 1969PhT....22e..43B }}</ref>