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Exact bremsstrahlung function in N=2 superconformal field theories

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We propose an exact formula for the energy radiated by an accelerating quark in N = 2 superconformal theories in four dimensions. This formula reproduces the known bremsstrahlung function for N = 4 theories and provides a prediction for all the perturbative and instanton corrections in N = 2 theories. We perform a perturbative check of our proposal up to three loops.

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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Exact bremsstrahlung function in N=2 superconformal field theories