Daniel Butter
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View article: Generalized dualities and supergroups
Generalized dualities and supergroups Open
A bstract Using a recently developed formulation of double field theory in superspace, the graviton, B -field, gravitini, dilatini, and Ramond-Ramond bispinor are encoded in a single generalized supervielbein. Duality transformations are e…
View article: Generalized Dualities and Supergroups
Generalized Dualities and Supergroups Open
Using a recently developed formulation of double field theory in superspace, the graviton, $B$-field, gravitini, dilatini, and Ramond-Ramond bispinor are encoded in a single generalized supervielbein. Duality transformations are encoded as…
View article: Notes on Ramond-Ramond spinors and bispinors in double field theory
Notes on Ramond-Ramond spinors and bispinors in double field theory Open
A bstract The Ramond-Ramond sector of double field theory (DFT) can be described either as an O( D, D ) spinor or an O( D − 1 , 1) × O(1 , D − 1) bispinor. Both formulations may be related to the standard polyform expansion in terms of eve…
View article: Type II double field theory in superspace
Type II double field theory in superspace Open
A bstract We explore type II supersymmetric double field theory in superspace. The double supervielbein is an element of the orthosymplectic group OSp(10 , 10|64), which also governs the structure of generalized superdiffeomorphisms. Unlik…
View article: Consistent Truncations and Dualities
Consistent Truncations and Dualities Open
Recent progress in generalised geometry and extended field theories suggests a deep connection between consistent truncations and dualities, which is not immediately obvious. A prime example is generalised Scherk-Schwarz reductions in doub…
View article: Linearized off-shell 4+7 supergeometry of 11D supergravity
Linearized off-shell 4+7 supergeometry of 11D supergravity Open
A bstract We describe the linearized supergeometry of eleven dimensional supergravity with four off-shell local supersymmetries. We start with a background Minkowski 11D, N=1 superspace, and an additional ingredient of a global, constant, …
View article: Type II Double Field Theory in Superspace
Type II Double Field Theory in Superspace Open
We explore type II supersymmetric double field theory in superspace. The double supervielbein is an element of the orthosymplectic group OSp(10,10|64), which also governs the structure of generalized superdiffeomorphisms. Unlike bosonic do…
View article: Notes on Ramond-Ramond spinors and bispinors in double field theory
Notes on Ramond-Ramond spinors and bispinors in double field theory Open
The Ramond-Ramond sector of double field theory (DFT) can be described either as an O(D,D) spinor or an O(D-1,1) x O(1,D-1) bispinor. Both formulations may be related to the standard polyform expansion in terms of even or odd rank field st…
View article: Linearized Off-shell 4+7 Supergeometry of 11D Supergravity
Linearized Off-shell 4+7 Supergeometry of 11D Supergravity Open
We describe the linearized supergeometry of eleven dimensional supergravity with four off-shell local supersymmetries. We start with a background Minkowski 11D, N=1 superspace, and an additional ingredient of a global, constant, $G_2$-stru…
View article: Exploring the geometry of supersymmetric double field theory
Exploring the geometry of supersymmetric double field theory Open
A bstract The geometry of $$ \mathcal{N} $$ = 1 supersymmetric double field theory is revisited in superspace. In order to maintain the constraints on the torsion tensor, the local tangent space group of O( D ) × O( D ) must be expanded …
View article: Components of eleven-dimensional supergravity with four off-shell supersymmetries
Components of eleven-dimensional supergravity with four off-shell supersymmetries Open
A bstract We derive the component structure of 11D, N = 1/8 supergravity linearized around eleven-dimensional Minkowski space. This theory represents 4 local supersymmetries closing onto 4 of the 11 spacetime translations without the use o…
View article: Curvature squared invariants in six-dimensional $$ \mathcal{N} $$ = (1, 0) supergravity
Curvature squared invariants in six-dimensional $$ \mathcal{N} $$ = (1, 0) supergravity Open
A bstract We describe the supersymmetric completion of several curvature-squared invariants for $$ \mathcal{N} $$ = (1, 0) supergravity in six dimensions. The construction of the invariants is based on a close interplay between superconf…
View article: N = 2 dilaton Weyl multiplet in 4D supergravity
N = 2 dilaton Weyl multiplet in 4D supergravity Open
A bstract We construct the dilaton Weyl multiplet for N = 2 conformal supergravity in four dimensions. Beginning from an on-shell vector multiplet coupled to the standard Weyl multiplet, the equations of motion can be used to eliminate the…
View article: Eleven-dimensional supergravity in 4D, N = 1 superspace
Eleven-dimensional supergravity in 4D, N = 1 superspace Open
A bstract We give a formulation of linearized 11D supergravity in 4D, N = 1 superspace keeping all eleven bosonic coordinates. The fields are fluctuations around M = R 4|4 × Y , where Y is a background Riemannian 7-manifold admitting a G 2…
View article: Invariants for minimal conformal supergravity in six dimensions
Invariants for minimal conformal supergravity in six dimensions Open
We develop a new off-shell formulation for six-dimensional conformal\nsupergravity obtained by gauging the 6D ${\\cal N} = (1, 0)$ superconformal\nalgebra in superspace. This formulation is employed to construct two invariants\nfor 6D ${\\…
View article: All N=4 Conformal Supergravities
All N=4 Conformal Supergravities Open
All N=4 conformal supergravities in four space-time dimensions are constructed. These are the only N=4 supergravity theories whose actions are invariant under off-shell supersymmetry. They are encoded in terms of a holomorphic function tha…
View article: On conformal supergravity and harmonic superspace
On conformal supergravity and harmonic superspace Open
This paper describes a fully covariant approach to harmonic superspace. It is\nbased on the conformal superspace description of conformal supergravity and\ninvolves extending the supermanifold M^{4|8} by the tangent bundle of CP^1. The\nre…