An exact formula for the radiation of a moving quark in N = 4 super Yang Mills

We derive an exact formula for the cusp anomalous dimension at small angles. This is done by relating the latter to the computation of certain 1/8 BPS Wilson loops which was performed by supersymmetric localization. This function of the coupling also determines the power emitted by a moving quark in...

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Detalles Bibliográficos
Autores principales: Correa, Diego Hernán, Henn, Johannes, Maldacena, Juan M., Sever, Amit
Formato: Articulo
Lenguaje:Inglés
Publicado: 2012
Materias:
Ciencias Exactas
Física
Wilson
’t Hooft and Polyakov loops
1/N Expansion
AdS-CFT Correspondence
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/95574
https://ri.conicet.gov.ar/11336/75096
https://link.springer.com/article/10.1007/JHEP06(2012)048
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:We derive an exact formula for the cusp anomalous dimension at small angles. This is done by relating the latter to the computation of certain 1/8 BPS Wilson loops which was performed by supersymmetric localization. This function of the coupling also determines the power emitted by a moving quark in N = 4 super Yang Mills, as well as the coefficient of the two point function of the displacement operator on the Wilson loop. By a similar method we compute the near BPS expansion of the generalized cusp anomalous dimension.

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