Precision calculation of 1/4-BPS Wilson loops in AdS
Dec 2, 2015
40 pages
Published in:
- JHEP 02 (2016) 105
- Published: Feb 16, 2016
e-Print:
- 1512.00841 [hep-th]
Report number:
- HU-EP-15-58
View in:
Citations per year
Abstract: (Springer)
We study the strong coupling behaviour of 1/4-BPS circular Wilson loops (a family of “latitudes”) in Super Yang-Mills theory, computing the one-loop corrections to the relevant classical string solutions in AdS ×S. 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
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