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Mar 9, 2012 at 9:52 history edited Michał Oszmaniec
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Mar 7, 2012 at 20:19 vote accept Mark Mueller
Mar 7, 2012 at 6:18 comment added user21349 Isn't the integer-spin case distinct from the half-integer case? For example, spin 1/2 can't be created by the motion of particles through space, so in the case of SU(2), it's not clear to me what would be meant physically by a frame of reference tied to the principal axes, as in Euler's equations for SO(3).
Mar 7, 2012 at 6:16 answer added Michał Oszmaniec timeline score: 4
Mar 7, 2012 at 4:31 history asked Mark Mueller CC BY-SA 3.0