Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. Join them; it only takes a minute:

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

I'm trying to understand this article about an advance in the theoretical understanding of QCD which centers on the Principal of Maximum Conformality. What is this Principle? In other words, what is being maximized and what does this tell us about the structure of QCD? Also, is this a new principle or a new application of an old principal?

Here's the full paper on the principle's application to top physics.

share|cite|improve this question

It is an approach to perturbative QCD which resolves ambiguities regarding the renormalization scale of the theory. It is done by summing terms for which the $\beta$-function is non-zero into the running coupling. In this sense, the remaining terms are now "maximally conformal" due to $\beta=0$. This results in predictions independent of the renormalization scheme. This approach seems to be relatively new, see for a detailed treatment.

share|cite|improve this answer

Your Answer


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

Not the answer you're looking for? Browse other questions tagged or ask your own question.