Half-BPS Wilson loop and AdS(2)/CFT1

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Title: Half-BPS Wilson loop and AdS(2)/CFT1
Authors: Giombia, S
Roiban, R
Tseytlin, AA
Item Type: Journal Article
Abstract: We study correlation functions of local operator insertions on the 1/2-BPS Wilson line in super Yang–Mills theory. These correlation functions are constrained by the 1d superconformal symmetry preserved by the 1/2-BPS Wilson line and define a defect CFT1 living on the line. At strong coupling, a set of elementary operator insertions with protected scaling dimensions correspond to fluctuations of the dual fundamental string in AdS ending on the line at the boundary and can be thought of as light fields propagating on the AdS2 worldsheet. We use AdS/CFT techniques to compute the tree-level AdS2 Witten diagrams describing the strong coupling limit of the four-point functions of the dual operator insertions. Using the OPE, we also extract the leading strong coupling corrections to the anomalous dimensions of the “two-particle” operators built out of elementary excitations. In the case of the circular Wilson loop, we match our results for the 4-point functions of a special type of scalar insertions to the prediction of localization to 2d Yang–Mills theory.
Issue Date: 1-Sep-2017
Date of Acceptance: 9-Jul-2017
ISSN: 0550-3213
Publisher: Elsevier
Start Page: 499
End Page: 527
Journal / Book Title: Nuclear Physics B
Volume: 922
Copyright Statement: © 2017 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (
Sponsor/Funder: Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Funder's Grant Number: ST/L00044X/1
Keywords: Science & Technology
Physical Sciences
Physics, Particles & Fields
0105 Mathematical Physics
0202 Atomic, Molecular, Nuclear, Particle And Plasma Physics
0206 Quantum Physics
Nuclear & Particles Physics
Publication Status: Published
Online Publication Date: 2017-07-20
Appears in Collections:Physics
Theoretical Physics
Faculty of Natural Sciences

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