Bootstrapping Null Polygon Wilson Loops
Davide Gaiotto, Juan Maldacena, Amit Sever, Pedro Vieira
TL;DR
This paper derives two-loop expressions for polygonal Wilson loops in R^{1,1} using operator product expansion, confirming previous results and exploring flux tube excitations.
Contribution
It introduces a method to obtain two-loop Wilson loop expressions from one-loop results via operator product expansion in a specific spacetime.
Findings
Two-loop Wilson loop expressions agree with previous computations.
Spectrum of flux tube excitations analyzed.
Method applicable to polygonal Wilson loops in R^{1,1}.
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.
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