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seen Jun 17 at 0:08

Dec
12
comment Why do or don't neutrinos have antiparticles?
@Ron yes but as you said you need two Majorana fermions to make a Dirac one
Dec
9
answered Why do or don't neutrinos have antiparticles?
Jan
27
awarded  Teacher
Jan
27
answered To calculate the correlation functions of an XX spin chain, Wick's theorem is used. But is it valid for a chain of any size?