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  References for the Little group

+ 1 like - 0 dislike

Where can i learn more about the little group ? I have read the nice discussion of this subgroup of the poincare group in Weinberg. However , I want to know more.

asked Apr 7, 2017 in Resources and References by anonymous [ no revision ]
recategorized Apr 7, 2017 by Dilaton

3 Answers

+ 3 like - 0 dislike
Did you Google search? There is vast information but to be honest there is not much to learn. The little group is a subgroup of the global group that acts as a stabilizer, usually in terms of the Lorentz boosts. That is, the little group is the group of rotations in space-time that does not change the momentum (seen as a charge/quantum number).
answered Apr 9, 2017 by conformal_gk (3,625 points) [ no revision ]
+ 2 like - 0 dislike

Try Sternberg: Group theory and physics; Section 3.9. It's a bit more mathematical than Weinberg's QFT, Vol. 1, but well presented and intuitive.

answered Apr 13, 2017 by zorba [ no revision ]
+ 0 like - 0 dislike
Maybe you want to know more about the use of the little groups. Read about induced representations!
answered Apr 18, 2017 by Arnold Neumaier (15,787 points) [ no revision ]

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