The cusp anomalous dimension at three loops and beyond

We derive an analytic formula at three loops for the cusp anomalous dimension Γ cusp(φ) in N = 4 super Yang-Mills. This is done by exploiting the relation of the latter to the Regge limit of massive amplitudes. We comment on the corresponding three loops quark anti-quark potential. Our result also d...

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Autores principales: Correa, Diego Hernán, Henn, Johannes, Maldacena, Juan, Sever, Amit
Formato: Articulo
Lenguaje:Inglés
Publicado: 2012
Materias:
Física
’t Hooft and Polyakov loops
1/N expansion
AdS-CFT correspondence
Scattering amplitudes
Wilson
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/95790
https://ri.conicet.gov.ar/11336/76536
https://link.springer.com/article/10.1007%2FJHEP05%282012%29098
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-95790
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
’t Hooft and Polyakov loops
1/N expansion
AdS-CFT correspondence
Scattering amplitudes
Wilson
spellingShingle Física
’t Hooft and Polyakov loops
1/N expansion
AdS-CFT correspondence
Scattering amplitudes
Wilson
Correa, Diego Hernán
Henn, Johannes
Maldacena, Juan
Sever, Amit
The cusp anomalous dimension at three loops and beyond
topic_facet Física
’t Hooft and Polyakov loops
1/N expansion
AdS-CFT correspondence
Scattering amplitudes
Wilson
description We derive an analytic formula at three loops for the cusp anomalous dimension Γ cusp(φ) in N = 4 super Yang-Mills. This is done by exploiting the relation of the latter to the Regge limit of massive amplitudes. We comment on the corresponding three loops quark anti-quark potential. Our result also determines a considerable part of the three-loop cusp anomalous dimension in QCD. Finally, we consider a limit in which only ladder diagrams contribute to physical observables. In that limit, a precise agreement with strong coupling is observed. © 2012 SISSA.
format Articulo
Articulo
author Correa, Diego Hernán
Henn, Johannes
Maldacena, Juan
Sever, Amit
author_facet Correa, Diego Hernán
Henn, Johannes
Maldacena, Juan
Sever, Amit
author_sort Correa, Diego Hernán
title The cusp anomalous dimension at three loops and beyond
title_short The cusp anomalous dimension at three loops and beyond
title_full The cusp anomalous dimension at three loops and beyond
title_fullStr The cusp anomalous dimension at three loops and beyond
title_full_unstemmed The cusp anomalous dimension at three loops and beyond
title_sort cusp anomalous dimension at three loops and beyond
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/95790
https://ri.conicet.gov.ar/11336/76536
https://link.springer.com/article/10.1007%2FJHEP05%282012%29098
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