Simplifying amplitudes in Maxwell-Einstein and Yang-Mills-Einstein supergravities

Abstract

This article reviews recent progress in formulating double-copy constructions for scattering amplitudes in supergravity theories with N=2 supersymmetry in five and four spacetime dimensions. Particular attention is devoted to infinite families of Maxwell-Einstein theories with symmetric and homogeneous target spaces and to Yang-Mills-Einstein theories with compact gauge groups. Extension of the construction to theories with spontaneously-broken gauge symmetry is also discussed.

24 pages, PDFLaTex, a later version of this review is to appear as a contribution to an edited volume

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