I'm having difficulty with the [tex] D^{l}(\theta) [/tex] representation of 3D rotations what do the mean i suppose one you construct it for l = 1 you get the general rotation Euler matrix for 3-d Space, but what do the l = other integers or half integers mean physically? is the D matrices the generalization of 3-D rotations to different vector spaces? such as a 2 dimensional space for l = 1/2? any explanation would help thanks.(adsbygoogle = window.adsbygoogle || []).push({});

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# Group Theroy/QM

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