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Spin–statistics theorem
In
quantum mechanics
, the
spin–statistics theorem
relates the
spin
of a particle to the
particle statistics
it obeys. The spin of a particle is its intrinsic
angular momentum
(that is, the contribution to the total angular momentum that is not due to the orbital motion of the particle). All
particles
have either
integer
spin or
half-integer
spin (in units of the
reduced Planck constant
h
).
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