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John Carlos Baez · 47w
Neutrino masses are weird. First we thought neutrinos were massless. Then we thought they had positive mass. Then some evidence pointed to an IMAGINARY mass, which was crazy. That went away when...
 Bartosz Milewski profile picture
Bartosz Milewski @Bartosz Milewski
@nprofile1q... I looked at the original paper and I'm confused. They are saying that the actual equations depend on the squares of masses, but the non-relativistic approximation becomes linear in the masses. That doesn't make sense.

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John Carlos Baez · 47w
nostr:nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqky223zcc4q69d8t0me4vg5uw8mw0yxeukjgvz6h92laqnenr0ajsgze5g0 - excellent detective work: thanks very much! They are looking at something like $$\sqrt{x^2 + a^2 m^2}$$ and saying that in the limit ๐‘Žโ†’+โˆž it becomes close to ๐‘Ž๐‘š. Sorr...