Precision calculation of 1/4-BPS Wilson loops in AdS5×S5_5\times S^5

Dec 2, 2015
40 pages
Published in:
  • JHEP 02 (2016) 105
  • Published: Feb 16, 2016
e-Print:
Report number:
  • HU-EP-15-58

Citations per year

201520182021202420250246810
Abstract: (Springer)
We study the strong coupling behaviour of 1/4-BPS circular Wilson loops (a family of “latitudes”) in N=4 \mathcal{N}=4 Super Yang-Mills theory, computing the one-loop corrections to the relevant classical string solutions in AdS5_{5} ×S5^{5}. Supersymmetric localization provides an exact result that, in the large ’t Hooft coupling limit, should be reproduced by the sigma-model approach. To avoid ambiguities due to the absolute normalization of the string partition function, we compare the ratio between the generic latitude and the maximal 1/2-BPS circle: any measure-related ambiguity should simply cancel in this way. We use the Gel’fand-Yaglom method with Dirichlet boundary conditions to calculate the relevant functional determinants, that present some complications with respect to the standard circular case. After a careful numerical evaluation of our final expression we still find disagreement with the localization answer: the difference is encoded into a precise “remainder function”. We comment on the possible origin and resolution of this discordance.
Note:
  • References added, comments in introduction and conclusions added, it matches published version
  • Wilson
  • ’t Hooft and Polyakov loops
  • AdS-CFT Correspondence
  • Sigma Models
  • string: partition function
  • string: classical
  • anti-de Sitter
  • localization
  • Wilson loop
  • strong coupling