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Title: Exact correlators on the Wilson loop in $$ \mathcal{N}=4 $$ SYM: localization, defect CFT, and integrability

Abstract

We compute a set of correlation functions of operator insertions on the 1/8 BPS Wilson loop in N=4 SYM by employing supersymmetric localization, OPE and the Gram-Schmidt orthogonalization. These correlators exhibit a simple determinant structure, are position-independent and form a topological subsector, but depend nontrivially on the ’t Hooft coupling and the rank of the gauge group. When applied to the 1/2 BPS circular (or straight) Wilson loop, our results provide an infinite family of exact defect CFT data, including the structure constants of protected defect primaries of arbitrary length inserted on the loop. At strong coupling, we show precise agreement with a direct calculation using perturbation theory around the AdS 2 string worldsheet. We also explain the connection of our results to the “generalized Bremsstrahlung functions” previously computed from integrability techniques, reproducing the known results in the planar limit as well as obtaining their finite N generalization. Furthermore, we show that the correlators at large N can be recast as simple integrals of products of polynomials (known as Q-functions) that appear in the Quantum Spectral Curve approach. This suggests an interesting interplay between localization, defect CFT and integrability.

Authors:
 [1];  [2]
  1. Princeton Univ., NJ (United States). Dept. of Physics
  2. Inst. for Advanced Study, Princeton, NJ (United States). School of Natural Sciences
Publication Date:
Research Org.:
Inst. for Advanced Study, Princeton, NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1502487
Grant/Contract Number:  
[SC0009988]
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
[Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2018; Journal Issue: 5]; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; AdS-CFT Correspondence, Conformal Field Theory, Supersymmetric Gauge Theory, Wilson, 't Hooft and Polyakov loops

Citation Formats

Giombi, Simone, and Komatsu, Shota. Exact correlators on the Wilson loop in $$ \mathcal{N}=4 $$ SYM: localization, defect CFT, and integrability. United States: N. p., 2018. Web. doi:10.1007/JHEP05(2018)109.
Giombi, Simone, & Komatsu, Shota. Exact correlators on the Wilson loop in $$ \mathcal{N}=4 $$ SYM: localization, defect CFT, and integrability. United States. doi:10.1007/JHEP05(2018)109.
Giombi, Simone, and Komatsu, Shota. Wed . "Exact correlators on the Wilson loop in $$ \mathcal{N}=4 $$ SYM: localization, defect CFT, and integrability". United States. doi:10.1007/JHEP05(2018)109. https://www.osti.gov/servlets/purl/1502487.
@article{osti_1502487,
title = {Exact correlators on the Wilson loop in $$ \mathcal{N}=4 $$ SYM: localization, defect CFT, and integrability},
author = {Giombi, Simone and Komatsu, Shota},
abstractNote = {We compute a set of correlation functions of operator insertions on the 1/8 BPS Wilson loop in N=4 SYM by employing supersymmetric localization, OPE and the Gram-Schmidt orthogonalization. These correlators exhibit a simple determinant structure, are position-independent and form a topological subsector, but depend nontrivially on the ’t Hooft coupling and the rank of the gauge group. When applied to the 1/2 BPS circular (or straight) Wilson loop, our results provide an infinite family of exact defect CFT data, including the structure constants of protected defect primaries of arbitrary length inserted on the loop. At strong coupling, we show precise agreement with a direct calculation using perturbation theory around the AdS2 string worldsheet. We also explain the connection of our results to the “generalized Bremsstrahlung functions” previously computed from integrability techniques, reproducing the known results in the planar limit as well as obtaining their finite N generalization. Furthermore, we show that the correlators at large N can be recast as simple integrals of products of polynomials (known as Q-functions) that appear in the Quantum Spectral Curve approach. This suggests an interesting interplay between localization, defect CFT and integrability.},
doi = {10.1007/JHEP05(2018)109},
journal = {Journal of High Energy Physics (Online)},
number = [5],
volume = [2018],
place = {United States},
year = {2018},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 20 works
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Figures / Tables:

Figure 1 Figure 1: General configuration of the 1/8-BPS Wilson loop, denoted by a red curve. The 1/8- BPS Wilson loop lives on S2 and couples to a scalar as prescribed in (2.1). The expectation value of such a loop depends only on the area A of the region inside the loopmore » (the red-shaded region in the figure). Note that, although “the region inside/outside the loop” is not a well-defined notion, such ambiguity does not affect the expectation value since it is invariant under $A$→ 4$π$−$A$, which exchanges the regions inside and outside the loop.« less

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