Recent content by hjlim

Hi, What about taking some, say, computer science courses in your school? If you are willing to stay in school for 1~2 semesters, you could probably even get an MS degree in cs, for free for you as you should have a tuition waiver!

You are right. They are my mistakes and I corrected them. But I still don't understand. I'll really appreciate if u can give me some hints.

Hi all, If I define Tij = a+i aj, then C2 = T11T11 + T12T21 + T21T12 + T22T22 is a second order casimir operator. For SU(2), it's \frac{N}{2} (\frac{N}{2} + 1) But as I calculate it directly, C2 = a+1 a1a+1 a1 + a+1 a2a+2 a1 + a+2 a1a+1 a1 + a+2 a2a+2 a2 = a+1 a1a+1 a1 + a+1...

I am pretty confused about how to construct states to make symmetric / anti-symmetric combination so I would like to ask some questions. For example, for SU(2), states of three spin-half particles can be decomposed as 2 x 2 x 2 = 4 + 2 + 2, 3 irreducible combination with dim 4, 2, 2. -if...