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  4. On non-supersymmetric generalizations of the Wilson-Maldacena loops in N=4 SYM
 
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On non-supersymmetric generalizations of the Wilson-Maldacena loops in N=4 SYM
File(s)
1-s2.0-S0550321318302050-main.pdf (508.63 KB)
Published version
Author(s)
Beccaria, Matteo
Tseytlin, Arkady A
Type
Journal Article
Abstract
Building on our previous work arXiv:1712.06874 we consider one-parameter Polchinski–Sully generalization of the Wilson–Maldacena (WM) loops in planar SYM theory. This breaks local supersymmetry of WM loop and leads to running of the deformation parameter ζ. At three-loop level, we compute the ladder diagram contribution to the expectation value of the circular loop which is dominant for large ζ. The limit fixed in which the expectation value is determined by the Gaussian adjoint scalar path integral might be exactly solvable despite the lack of global supersymmetry. We study similar generalization of the -BPS “latitude” WM loop which depends on two parameters (in addition to the 't Hooft coupling λ). One may also introduce another supersymmetry-breaking parameter – the winding number of the scalar coupling circle. We find the two-loop expression for the expectation value of the associated loop by combining the ladder diagram contribution with an indirect determination of the non-ladder contribution using 1d defect CFT perturbation theory.
Date Issued
2018-09-01
Date Acceptance
2018-07-20
Citation
Nuclear Physics B, 2018, 934, pp.466-497
URI
http://hdl.handle.net/10044/1/65962
DOI
https://www.dx.doi.org/10.1016/j.nuclphysb.2018.07.019
ISSN
0550-3213
Publisher
Elsevier
Start Page
466
End Page
497
Journal / Book Title
Nuclear Physics B
Volume
934
Copyright Statement
© 2018 The Authors. Published by Elsevier B.V. Thiss is an open access article under the CC BY license (http://creativecommons.orglicenses/by/4.0/).
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000445497400020&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Physics, Particles & Fields
Physics
YANG-MILLS THEORY
Publication Status
Published
Date Publish Online
2018-07-24
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