Quark-anti-quark potential in N=4 SYM

Nikolay Gromov, Fedor Levkovich-Maslyuk

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42 Citations (Scopus)
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Abstract

We construct a closed system of equations describing the quark-anti-quark potential at any coupling in planar NN = 4 supersymmetric Yang-Mills theory. It is based on the Quantum Spectral Curve method supplemented with a novel type of asymptotics. We present a high precision numerical solution reproducing the classical and one-loop string predictions very accurately. We also analytically compute the first 7 nontrivial orders of the weak coupling expansion.

Moreover, we study analytically the generalized quark-anti-quark potential in the limit of large imaginary twist to all orders in perturbation theory. We demonstrate how the QSC reduces in this case to a one-dimensional Schrodinger equation. In the process we establish a link between the Q-functions and the solution of the Bethe-Salpeter equation.
Original languageEnglish
JournalJournal of High Energy Physics
Early online date22 Dec 2016
DOIs
Publication statusPublished - 2016

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