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- Title
Reformulating the TBA equations for the quark anti-quark potential and their two loop expansion.
- Authors
Bajnok, Zoltán; Balog, János; Correa, Diego; Hegedűs, Árpád; Schaposnik Massolo, Fidel; Tóth, Gábor
- Abstract
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.
- Publication
Journal of High Energy Physics, 2014, Vol 2014, Issue 3, p1
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1007/JHEP03(2014)056