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Beyond Amplitudes' Positivity and the Fate of Massive Gravity

Show simple item record Bellazzini, Brando Riva, Francesco Serra, Javi Sgarlata, Francesco 2017-10-09T12:53:09Z 2017-10-09T12:53:09Z 2017
dc.description.abstract We constrain effective feld theories by going beyond the familiar positivity bounds that follow from unitarity, analyticity, and crossing symmetry of the scattering amplitudes. As interesting examples, we discuss the implications of the bounds for the Galileon and ghost-free massive gravity. The latter is ruled out by our theoretical bounds when combined with the experimental constraints on the graviton mass and from fifth-force experiments, given the impossibility to consistently implement the Vainshtein mechanism. We also show that the Galileon theory must contain symmetry-breaking terms that are at most one-loop suppressed compared to the symmetry-preserving ones. en_US
dc.language.iso en en_US
dc.relation.ispartofseries SISSA;46/2017/FISI
dc.relation.ispartofseries CERN;TH-2017-201
dc.title Beyond Amplitudes' Positivity and the Fate of Massive Gravity en_US
dc.type Preprint en_US
dc.contributor.area Physics en_US
dc.relation.firstpage 1 en_US
dc.relation.lastpage 11 en_US

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