Two loop results from one loop computations and non perturbative solutions of exact evolution equations

Details Two loop results from one loop computations and non perturbative solutions of exact evolution equations Two loop results from one loop computations and non perturbative solutions of exact evolution equations

1994-03-27

arxiv.org/abs/hep-th/9403164v3

Z.Phys. C65 (1995) 519-535

Physics

High Energy Physics

High Energy Physics - Theory

32 pages, HD-THEP-94-3, replaced because: lines too long, blank lines

Scientific paper

10.1007/BF01556140

A nonperturbative method is proposed for the approximative solution of the exact evolution equation which describes the scale dependence of the effective average action. It consists of a combination of exact evolution equations for independent couplings with renormalization group improved one loop expressions of secondary couplings. Our method is illustrated by an example: We compute the beta-function of the quartic coupling lambda of an O(N) symmetric scalar field theory to order lambda^3 as well as the anomalous dimension to order lambda^2 using only one loop expressions and find agreement with the two loop perturbation theory. We also treat the case of very strong coupling and confirm the existence of a "triviality bound".

Affiliated with

Also associated with

No associations

Rating

Two loop results from one loop computations and non perturbative solutions of exact evolution equations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Two loop results from one loop computations and non perturbative solutions of exact evolution equations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two loop results from one loop computations and non perturbative solutions of exact evolution equations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-620984