Multichannel conformal blocks for polygon Wilson loops

Amit Sever*, Pedro Vieira

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We introduce the notion of Multichannel Conformal Blocks relevant for the Operator Product Expansion for Null Polygon Wilson loops with more than six edges. As an application of these, we decompose the one loop heptagon Wilson loop and predict the value of its two loop OPE discontinuities. At the functional level, the OPE discontinuities are roughly half of the full result. Using symbols they suce to predict the full two loop result. We also present several new predictions for the heptagon result at any loop order.

Original languageEnglish
Article number070
JournalJournal of High Energy Physics
Issue number1
StatePublished - 2012
Externally publishedYes


  • AdS-CFT Correspondence
  • Exact S-Matrix
  • Integrable Field Theories
  • Supersymmetric gauge theory


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