Beyond cusp anomalous dimension from integrability

Details Beyond cusp anomalous dimension from integrability Beyond cusp anomalous dimension from integrability

2009-01-21

arxiv.org/abs/0901.3161v2

Phys.Lett.B675:137-144,2009

Physics

High Energy Physics

High Energy Physics - Theory

Latex version

Scientific paper

10.1016/j.physletb.2009.03.053

We study the first sub-leading correction $O((\ln s)^0)$ to the cusp anomalous dimension in the high spin expansion of finite twist operators in ${\cal N}=4$ SYM theory. Since this approximation is still governed by a linear integral equation (derived already from the Bethe Ansatz equations in a previous paper), we finalise it better in order to study the weak and strong coupling regimes. In fact, we emphasise how easily the weak coupling expansion can be obtained, confirms the known four loop result and predicts the higher orders. Eventually, we pay particular attention to the strong coupling regime showing agreement and predictions in comparison with string expansion; speculations on the 'universal' part (upon subtracting the collinear anomalous dimension) are brought forward.

Affiliated with

Also associated with

No associations

Rating

Beyond cusp anomalous dimension from integrability 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 Beyond cusp anomalous dimension from integrability, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Beyond cusp anomalous dimension from integrability will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-188693