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arXiv · 1705.10780

Towards the exact Bremsstrahlung function of ABJM theory

Marco S. Bianchi·Luca Griguolo·Andrea Mauri·Silvia Penati·Michelangelo Preti·Domenico Seminara
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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.

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Marco S. Bianchi, Luca Griguolo, Andrea Mauri, Silvia Penati, Michelangelo Preti, Domenico Seminara. 2017-05-30. Towards the exact Bremsstrahlung function of ABJM theory. https://doi.org/10.1007/jhep08(2017)022

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