Bootstrapping Null Polygon Wilson Loops
arXiv:1010.5009 · doi:10.1007/JHEP03(2011)092
Abstract
We derive the two loop expressions for polygonal Wilson loops by starting from the one loop expressions and applying an operator product expansion. We do this for polygonal Wilson loops in R^{1,1} and find a result in agreement with previous computations. We also discuss the spectrum of excitations around flux tube that connects two null Wilson lines.
29 pages, 10 figures, v2: references added