# References for the Little group

+ 1 like - 0 dislike
178 views

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.

recategorized Apr 7

+ 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 by (3,495 points)
+ 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.

+ 0 like - 0 dislike
Maybe you want to know more about the use of the little groups. Read about induced representations!
answered Apr 18 by (12,045 points)

 Please use answers only to (at least partly) answer questions. To comment, discuss, or ask for clarification, leave a comment instead. To mask links under text, please type your text, highlight it, and click the "link" button. You can then enter your link URL. Please consult the FAQ for as to how to format your post. This is the answer box; if you want to write a comment instead, please use the 'add comment' button. Live preview (may slow down editor)   Preview Your name to display (optional): Email me at this address if my answer is selected or commented on: Privacy: Your email address will only be used for sending these notifications. Anti-spam verification: If you are a human please identify the position of the character covered by the symbol $\varnothing$ in the following word:p$\hbar\varnothing$sicsOverflowThen drag the red bullet below over the corresponding character of our banner. When you drop it there, the bullet changes to green (on slow internet connections after a few seconds). To avoid this verification in future, please log in or register.