Five-dimensional supergravity in N = 1/2 superspace
Abstract
We construct 5D, N = 1 supergravity in a 4D, N = 1 superspace with an extra bosonic coordinate. This represents four of the supersymmetries and the associated Poincaré symmetries manifestly. The remaining four supersymmetries and the rest of the Poincaré symmetries are represented linearly but not manifestly. In the linearized approximation, the action reduces to the known superspace result. As an application of the formalism, we discuss the construction of the 5D gravitational Chern-Simons invariant ∫ A ∧ R ∧ R in this superspace.
- Publication:
-
Journal of High Energy Physics
- Pub Date:
- March 2020
- DOI:
- 10.1007/JHEP03(2020)098
- arXiv:
- arXiv:1909.09208
- Bibcode:
- 2020JHEP...03..098B
- Keywords:
-
- Extended Supersymmetry;
- Supergravity Models;
- Superspaces;
- High Energy Physics - Theory;
- High Energy Physics - Phenomenology
- E-Print:
- Published version. Contains improvements over v1 including relation to new-minimal supergravity and various formulations of off-shell 5D, N=1 supergravity