113 citations · 1.9k across the 68 of their papers we have counts for
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Uniqueness of D=8 minimal supergravity with two vector multiplets
Guillaume Bossard, Bingxin Lao, Ruben Minasian
There exist only four known string theories with minimal supersymmetry in eight dimensions, whose low energy effective descriptions are given by minimal supergravity coupled to $l=…
Higher dualities in exceptional field theory
Guillaume Bossard, Nicolas Boulanger, Josh O'Connor
It was proposed that there exists an -invariant formulation of eleven-dimensional supergravity in which the propagating fields of the theory are realised through an infinit…
Bounds on the next-to-leading Wilson coefficient in maximal supergravity
Guillaume Bossard, Adrien Loty
One expects type II string theory to be the unique ultraviolet completion of maximal supergravity. Motivated by the recent computation of the unitary bound on the leading Wilson co…
The Ultraviolet Problem in Supergravity
G. Bossard, K. S. Stelle
We review the development of understanding for the problem of ultraviolet divergences in supergravity. This history proceeds from initial constructions of counterterms invariant un…
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…
Higher derivative couplings with multi-tensor multiplets in 6D supergravity, action and anomalies
Guillaume Bossard, Axel Kleinschmidt, Ergin Sezgin
We revisit six-dimensional (1,0) supergravity coupled to nT tensor multiplets and Yang-Mills fields for nT>1 for which no covariant action exists. We construct the action in the He…
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…
Teleparallel Geroch geometry
Guillaume Bossard, Martin Cederwall, Jakob Palmkvist
We construct the teleparallel dynamics for extended geometry where the structure algebra is (an extension of) an untwisted affine Kac-Moody algebra. This provides a geometrisation…
Non-geometric BPS branes on T-folds
Massimo Bianchi, Guillaume Bossard
We give a detailed (microscopic) description of the geometric and non-geometric fundamental branes and their bound states in Type II superstring compactifications preserving N=6 su…
Consistent truncation of eleven-dimensional supergravity on
Guillaume Bossard, Franz Ciceri, Gianluca Inverso +1
Eleven-dimensional supergravity on is conjectured to be dual to the M-theory matrix model. We prove that the dynamics of a subset of fluctuations around this backgr…
Maximal D=2 supergravities from higher dimensions
Guillaume Bossard, Franz Ciceri, Gianluca Inverso +1
We develop in detail the general framework of consistent Kaluza-Klein truncations from D=11 and type II supergravities to gauged maximal supergravities in two dimensions. In partic…
Saturating unitarity bounds at U-duality symmetric points
Guillaume Bossard, Adrien Loty
It has recently been shown that the leading Wilson coefficient in type II string theory can take (almost) all values allowed by unitarity, crossing symmetry and maximal supersymmet…
Extended geometry of magical supergravities
Guillaume Bossard, Martin Cederwall, Axel Kleinschmidt +3
We provide, through the framework of extended geometry, a geometrisation of the duality symmetries appearing in magical supergravities. A new ingredient is the general formulation…
Consistent Kaluza-Klein truncations and two-dimensional gauged supergravity
Guillaume Bossard, Franz Ciceri, Gianluca Inverso +1
We consider generalized Scherk-Schwarz reductions of E exceptional field theory to D=2 space-time dimensions and in particular construct the resulting scalar potential of all g…
Perturbative higher-derivative terms in N=6 asymmetric orbifolds
Massimo Bianchi, Guillaume Bossard, Dario Consoli
We analyse the perturbative four-point amplitudes in the simplest string theory examples of T-fold backgrounds, which enjoy N=6 supersymmetries in four dimensions. There are two th…
A master exceptional field theory
Guillaume Bossard, Axel Kleinschmidt, Ergin Sezgin
We construct a pseudo-Lagrangian that is invariant under rigid and transforms as a density under generalised diffeomorphisms. The gauge-invariance requires the us…
E exceptional field theory II. The complete dynamics
Guillaume Bossard, Franz Ciceri, Gianluca Inverso +2
We construct the first complete exceptional field theory that is based on an infinite-dimensional symmetry group. E exceptional field theory provides a unified description of e…
1/8-BPS Couplings and Exceptional Automorphic Functions
Guillaume Bossard, Axel Kleinschmidt, Boris Pioline
Unlike the and couplings, whose coefficients are Langlands-Eisenstein series of the U-duality group, the coefficient $\mathcal{E}_{(0,1)}^{(…
On supersymmetric E11 exceptional field theory
Guillaume Bossard, Axel Kleinschmidt, Ergin Sezgin
We construct an infinite system of non-linear duality equations, including fermions, that are invariant under global E11 and gauge invariant under generalised diffeomorphisms upon…
Microstate geometries at a generic point in moduli space
Guillaume Bossard, Severin Lüst
We systematically study all supersymmetric solutions of six-dimensional (2,0) supergravity with a null isometry. In particular, every such solution with at least four real supersym…
E exceptional field theory I. The potential
Guillaume Bossard, Franz Ciceri, Gianluca Inverso +2
We construct the scalar potential for the exceptional field theory based on the affine symmetry group E. The fields appearing in this potential live formally on an infinite-dim…
Exact effective interactions and 1/4-BPS dyons in heterotic CHL orbifolds
Guillaume Bossard, Charles Cosnier-Horeau, Boris Pioline
Motivated by precision counting of BPS black holes, we analyze six-derivative couplings in the low energy effective action of three-dimensional string vacua with 16 supercharges. B…
Cancellation of divergences up to three loops in exceptional field theory
Guillaume Bossard, Axel Kleinschmidt
We consider the tetrahedral three-loop diagram in exceptional field theory evaluated as a scalar diagram for four external gravitons. At lowest order in momenta, this diagram…
Two Kissing Bolts
Guillaume Bossard, Stefanos Katmadas, David Turton
The study of non-supersymmetric black hole microstates offers the potential to resolve the black hole information paradox. A system of equations was recently obtained that enables…