Recent content by Phis

I have a question about the use of trace in QFT in general - more specifically the use of trace in the lagrangian in the effective theory concerning chiral symmetry in QCD. I am slowly trying to get a hang of everything, and most things i am able to calculate, but i still have som very specific...

I can see that now from your paper that you have linked to. You explain it well on page 264. However in the paper that you linked to in post #3 it clearly uses that notation between equation 48 and 49 on page 9. But i am not saying that it is good notation, i was just confused because they used...

Alright i have read the article from arxiv that you linked to - and i must say that was exactly what i needed! That really helped on my understanding. I tried to write down the basic structure of symmetries that describe the chiral symmetry break, and i now have some final questions: We can...

Thank you for the answer. I can understand that when you work with a massless lagrangian, you don't get mixed terms with left and right-handed quarks - this ultimately means that the equations treat the two chiralities indenpendently. But what is different about the vector symmetry group...

I am trying to learn about the various SU groups related to QCD. I have about 5 QFT and Particle physics books from my student library and written down about 20 pages of handwritten notes about specific parts of say generators, matrices, group properties etc. - but i don't really feel that I...