4 papers
A unique coupling of the massive spin-2 field to supergravity
Guillaume Bossard, Gabriele Casagrande, Emilian Dudas +1
We show that the coupling of a massive spin-2 field to undeformed N=1 supergravity in four dimensions is unique, leading to a specific non-minimal coupling to the Riemann tensor. T…
Taxonomy of type II orientifold flux vacua in 3D
Ãlvaro Arboleya, Gabriele Casagrande, Adolfo Guarino +1
We complete the study initiated in \cite{Arboleya:2024vnp} and investigate three-dimensional (3D) flux vacua of type II orientifold reductions on twisted tori that include a single…
Linear and nonlinear supersymmetry in field and string theory
Gabriele Casagrande
This Ph.D. thesis investigates effective field and string theories in which supersymmetry is realized and broken in various ways. Chapter 1 addresses effective theories with nonlin…
Twisted Orientifold planes and S-duality without supersymmetry
Guillaume Bossard, Gabriele Casagrande, Emilian Dudas
We construct a novel orientifold of type IIB string theory that breaks all supersymmetries. It is a closed string theory without open sector and it can be understood as a Scherk-Sc…