Reformulating the TBA equations for the quark anti-quark potential and their two loop expansion

Zoltán Bajnok, János Balog, Diego H. Correa, Árpád Hegedűs, Fidel I. Schaposnik Massolo, Gábor Zsolt Tóth

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7 Citations (Scopus)


The boundary thermodynamic Bethe Ansatz (BTBA) equations introduced in [1, 2] to describe the cusp anomalous dimension contain imaginary chemical potentials and singular boundary fugacities, which make its systematic expansion problematic. We propose an alternative formulation based on real chemical potentials and additional source terms. We expand our equations to double wrapping order and find complete agreement with the direct two-loop gauge theory computation of the cusp anomalous dimension.

Original languageEnglish
Article number56
JournalJournal of High Energy Physics
Issue number3
Publication statusPublished - Mar 2014



  • AdS-CFT Correspondence
  • Integrable Field Theories

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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