Towards the exact Bremsstrahlung function of ABJM theory
High Energy Physics - Theory
2017-09-13 v1
Abstract
We present the three-loop calculation of the Bremsstrahlung function associated to the 1/2-BPS cusp in ABJM theory, including color subleading corrections. Using the BPS condition we reduce the computation to that of a cusp with vanishing angle. We work within the framework of heavy quark effective theory (HQET) that further simplifies the analytic evaluation of the relevant cusp anomalous dimension in the near-BPS limit. The result passes nontrivial tests, such as exponentiation, and is in agreement with the conjecture made in [1] for the exact expression of the Bremsstrahlung function, based on the relation with fermionic latitude Wilson loops.
Keywords
Cite
@article{arxiv.1705.10780,
title = {Towards the exact Bremsstrahlung function of ABJM theory},
author = {Marco S. Bianchi and Luca Griguolo and Andrea Mauri and Silvia Penati and Michelangelo Preti and Domenico Seminara},
journal= {arXiv preprint arXiv:1705.10780},
year = {2017}
}
Comments
46 pages, 15 figures