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pfdietz
on July 14, 2023
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Supermassive Dark Star candidates seen by JWST
No. Neutrons and antineutrons are different particles, for example.
lanna
on July 14, 2023
[–]
Neutrons don't have charge, but their quarks do. Antineutrons have quarks with reversed charge.
Just like a neutral atom can have a neutral antiatom.
addaon
on July 14, 2023
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If you prefer, then, neutrinos are neutral but have an anti-particle (although it's still possible that neutrinos are Majorana particles, in which case they're their own anti-particle).
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