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Line defects and radiation in N=2 conformal theories.

Bianchi, Lorenzo and Lemos, Madalena and Meineri, Marco (2018) 'Line defects and radiation in N=2 conformal theories.', Physical review letters., 121 (14). p. 141601.


We study the conformal data of a generic superconformal line defect preserving half of the supercharges in a four-dimensional N = 2 conformal 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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Publisher statement:Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Date accepted:12 September 2018
Date deposited:09 June 2020
Date of first online publication:01 October 2018
Date first made open access:09 June 2020

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