Imperial College London
Alternate

ProfessorArkadyTseytlin

Faculty of Natural Sciences, Department of Physics

Professor of Theoretical Physics
 
 
 
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Contact

 

+44 (0)20 7594 1890a.tseytlin Website

 
 
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Location

 

685Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Beccaria:2018:10.1007/JHEP03(2018)131,
author = {Beccaria, M and Giombi, S and Tseytlin, AA},
doi = {10.1007/JHEP03(2018)131},
journal = {Journal of High Energy Physics},
title = {Non-supersymmetric Wilson loop in N=4 SYM and defect 1d CFT},
url = {http://dx.doi.org/10.1007/JHEP03(2018)131},
volume = {2018},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Following Polchinski and Sully (arXiv:1104.5077), we consider a generalized Wilson loop operator containing a constant parameter ζ in front of the scalar coupling term, so that ζ = 0 corresponds to the standard Wilson loop, while ζ = 1 to the locally supersymmetric one. We compute the expectation value of this operator for circular loop as a function of ζ to second order in the planar weak coupling expansion in  = 4 SYM theory. We then explain the relation of the expansion near the two conformal points ζ = 0 and ζ = 1 to the correlators of scalar operators inserted on the loop. We also discuss the AdS5 × S5 string 1-loop correction to the strong-coupling expansion of the standard circular Wilson loop, as well as its generalization to the case of mixed boundary conditions on the five-sphere coordinates, corresponding to general ζ. From the point of view of the defect CFT1 defined on the Wilson line, the ζ-dependent term can be seen as a perturbation driving a RG flow from the standard Wilson loop in the UV to the supersymmetric Wilson loop in the IR. Both at weak and strong coupling we find that the logarithm of the expectation value of the standard Wilson loop for the circular contour is larger than that of the supersymmetric one, which appears to be in agreement with the 1d analog of the F-theorem.
AU  - Beccaria,M
AU  - Giombi,S
AU  - Tseytlin,AA
DO  - 10.1007/JHEP03(2018)131
PY  - 2018///
SN  - 1029-8479
TI  - Non-supersymmetric Wilson loop in N=4 SYM and defect 1d CFT
T2  - Journal of High Energy Physics
UR  - http://dx.doi.org/10.1007/JHEP03(2018)131
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000428796900014&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/65971
VL  - 2018
ER  -
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