Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

A question in QFT of Weinberg

  1. May 13, 2015 #1
    In QFT vol 3 of Weinberg write:''For d=11 the spin 2 graviton representation of little group O(9) is a symmetric traceless tensor with 9x10/2-1=44 independent components:there is one
    2+(-)i3,2+(-)i3 component with J23=+(-)2, seven2+(-)i3,k components with J23=+(-)1; and twenty eight k,l components with J23=0(here k,l run over the seven values 4,5,6,7,8,9,10)''
    I tryed but fail to build the tensor.How can we build the tensor?I do not know why there are the senven and twenty eight components of J23=1or-1 and J23=0?Why does the tensor has rank 10 but not rank 4 because j=2=4x1/2?Why is tensor traceless?
    Last edited: May 13, 2015
  2. jcsd
  3. May 13, 2015 #2
    PS:QFT of Weinberg Vol 3 page 395
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: A question in QFT of Weinberg