2 papers
gr-qc2026
On the Plebanski Formulation with Energy Momentum
Jack C. M. Hughes, Joudy F. Jamal Beek, Fedor V. Kusmartsev
In Plebanski's formulation the coupling of matter is less direct than in the metric formulation since the energy-momentum tensor is symmetric, while the Plebanski variable…
gr-qc2026
Warped Product Einstein Manifolds in Four Dimensions
Jack C. M. Hughes, Joudy F. Jamal Beek, Fedor V. Kusmartsev
On four-dimensional (pseudo-)Riemannian manifolds the curvature tensor (viewed as an endomorphism on 2-forms) admits a chiral matrix representation which…