4 citations · 5 across the 5 of their papers we have counts for
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Catastrophe Structure and Stability of Axion Stars
Fedor V Kusmartsev, Joudy J F Beek, Jack C M Hughes
Axion stars are self-gravitating Bose--Einstein condensates of QCD axions or axion-like particles. Their stability determines whether they can survive as dark-matter structures and…
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…
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…