More on Wilson loops for two touching circles

Abstract

We calculate both at leading weak and strong coupling the renormalised Maldacena-Wilson loop for contours formed by consecutive passage of two touching circles. At the touching point both circles should have the same normal direction but form cusps of non-zero opening angle $\alpha$. Particular emphasis is put on the behaviour in the limit $\alpha \to 0$ and its comparison with the spiky situation studied in a previous paper, where $\alpha$ was set to zero before renormalisation.

18 pages, 8 figures, references added, text as appeared in JHEP

References in corpus (3)

• Gluon scattering amplitudes at strong coupling
• The three-loop cusp anomalous dimension in QCD and its supersymmetric extensions
• Dyson equations for correlators of Wilson loops

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