Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. It's 100% free.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

What is the "cusp anomalous dimension", starting from the basics? I came across this term while reading some QCD papers.

share|cite|improve this question
Better to ask what it is than to ask where to read about it. People will provide references if they need to. I'm editing accordingly. – David Z Dec 2 '11 at 9:40
@David: I looked up the reference, as the original question asked. I hope this is still useful. – Ron Maimon Dec 2 '11 at 11:38
Yeah, of course. If you don't know what something is but you can find a reference for it, that's generally a fine answer to a question asking what it is. – David Z Dec 2 '11 at 15:16
I think it's best as a comment, since it no longer answers the question. It is described here: . This is referenced by: , which describes the string theory point of view about this. – Ron Maimon Dec 2 '11 at 18:25

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.