Quark-antiquark potential in defect conformal field theory
High Energy Physics - Theory
2017-10-20 v3
Abstract
We consider antiparallel Wilson lines in N=4 super Yang-Mills in the presence of a codimension-1 defect. We compute the Wilson lines' expectation value both at weak coupling, in the gauge theory, and at strong coupling, by finding the string configurations which are dual to this operator. These configurations display a Gross-Ooguri transition between a connected, U-shaped string phase and a phase in which the string breaks into two disconnected surfaces. We analyze in detail the critical configurations separating the two phases and compare the string result with the gauge theory one in a certain double scaling limit.
Keywords
Cite
@article{arxiv.1708.04884,
title = {Quark-antiquark potential in defect conformal field theory},
author = {Michelangelo Preti and Diego Trancanelli and Edoardo Vescovi},
journal= {arXiv preprint arXiv:1708.04884},
year = {2017}
}
Comments
25 pages, 5 figures; v2: minor changes, references added, published version; v3: clarifications in Sec. 4