2007/08/23 by Filipe Moura
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Compactification (mathematics) #Cosmology and Gravitation Theories #Geometry #Heterotic string theory #Mathematical physics #Mathematics #Multiplet #Particle physics #Particle physics theoretical and experimental studies #Physics #Pure mathematics #Quantum mechanics #Scalar (mathematics) #Spectral line #Supergravity #Superstring theory #Supersymmetry #Type (biology) #hep-th
paper · pdf · doi:10.1103/physrevd.77.125011
published as Phys.Rev.D77:125011,2008 · 28 pages, no figures
arxiv created 2007/08/23 · openalex publication_date 2008/06/09 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
In a previous article we have shown the existence of a new independent R4 term, at one loop, in the type IIA and heterotic effective actions, after reduction to four dimensions, besides the usual square of the Bel-Robinson tensor. It had been shown that such a term could not be directly supersymmetrized, but we showed that was possible after coupling to a scalar chiral multiplet. In this article, we study the extended (N=8) supersymmetrization of this term, where no other coupling can be taken. We show that such supersymmetrization cannot be achieved at the linearized level. This is in conflict with the theory one gets after toroidal compactification of type II superstrings being N=8 supersymmetric. We interpret this result in the face of the recent claim that perturbative supergravity cannot be decoupled from string theory in d\ensuremath≥4, and N=8, d=4 supergravity is in the swampland.