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Double logarithms in ${\cal N} \geq 4$ supergravity: weak gravity and Shapiro's time delay
A study of the double logarithmic in the center-of-mass energy, s, contributions to the four-graviton scattering amplitude is presented for four-dimensional $ \mathcal{N} $ ≥ 4 supergravities. This includes a novel representation for the coefficients of the perturbative expansion based on exactly so...
Autor principal: | Sabio Vera, Agustín |
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Lenguaje: | eng |
Publicado: |
2019
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1007/JHEP01(2020)163 http://cds.cern.ch/record/2704681 |
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