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arXiv · 1805.04111

Line defects and radiation in $\mathcal{N}=2$ theories

Lorenzo Bianchi·Madalena Lemos·Marco Meineri
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Abstract

We study the conformal data of a generic superconformal half-BPS line defect in a four-dimensional $\mathcal{N} = 2$ theory. We prove a theory independent relation between the one-point function of the stress tensor in the presence of the line defect and the two-point function of the displacement operator. When the defect is interpreted as a heavy charged particle in a gauge theory, the result relates the energy emitted through Bremsstrahlung with the coupling of the stress tensor to the particle at rest.

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Lorenzo Bianchi, Madalena Lemos, Marco Meineri. 2018-05-10. Line defects and radiation in $\mathcal{N}=2$ theories. https://doi.org/10.1103/physrevlett.121.141601

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