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arXiv · 1202.4455

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

Diego Correa·Johannes Henn·Juan Maldacena·Amit Sever
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Abstract

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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Diego Correa, Johannes Henn, Juan Maldacena, Amit Sever. 2012-02-20. An exact formula for the radiation of a moving quark in N=4 super Yang Mills. https://doi.org/10.1007/jhep06(2012)048

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