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.

Line Defects and Radiation in N=2 Conformal Theories

Bianchi L.;Meineri M.
2018-01-01

Abstract

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.
2018
121
14
1
5
Bianchi L.; Lemos M.; Meineri M.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1849050
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