OPE for null Wilson loops and open spin chains

Details OPE for null Wilson loops and open spin chains OPE for null Wilson loops and open spin chains

2011-10-05

arxiv.org/abs/1110.1063v2

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, 2 figures

Scientific paper

Maximal helicity-violating scattering amplitudes in N=4 supersymmetric Yang-Mills theory are dual to Wilson loops on closed null polygons. We perform their operator product expansion analysis in two-dimensional kinematics in the soft-collinear approximation which corresponds to the case when some light-cone distances vanish. We construct the expansion in terms of multi-particle "heavy"-light operators, where the "heavy" fields are identified with the Wilson lines defining the OPE channel and the light fields emerge from the curvature of the contour. The correlation function of these define the remainder function. We study the dilatation operator for these operators at one loop order and find that it corresponds to a non-compact open spin chain. This provides an alternative view on elementary excitations propagating on the GKP string at weak coupling, which now correspond to particles traveling along an open spin chain. The factorized structure of the Wilson loop in the soft limit allows one to represent the two-loop correction to the octagon Wilson loop as a convolution formula and find the corresponding remainder function.

Affiliated with

Also associated with

No associations

Rating

OPE for null Wilson loops and open spin chains 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 OPE for null Wilson loops and open spin chains, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and OPE for null Wilson loops and open spin chains will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-325934