81 citations · 118 across the 3 of their papers we have counts for
6 papers · 1 filter
Supersymmetry, holonomy and Kundt spacetimes
J Brannlund, A Coley, S Hervik
Supersymmetric solutions of supergravity theories, and consequently metrics with special holonomy, have played an important role in the development of string theory. We describe ho…
Spherically symmetric cosmology: resource paper
A. A. Coley, W. C. Lim, G. Leon
We use the 1+3 frame formalism to write down the evolution equations for spherically symmetric models as a well-posed system of first order PDEs in two variables, suitable for nume…
Lorentzian spacetimes with constant curvature invariants in three dimensions
Alan Coley, Sigbjorn Hervik, Nicos Pelavas
In this paper we study Lorentzian spacetimes for which all polynomial scalar invariants constructed from the Riemann tensor and its covariant derivatives are constant (CSI spacetim…
Classification of the Weyl Tensor in Higher Dimensions and Applications
A. Coley
We review the theory of alignment in Lorentzian geometry and apply it to the algebraic classification of the Weyl tensor in higher dimensions. This classification reduces to the th…
Late-time behaviour of the tilted Bianchi type VI models
S Hervik, R J van den Hoogen, W C Lim +1
We study tilted perfect fluid cosmological models with a constant equation of state parameter in spatially homogeneous models of Bianchi type VI using dynamical systems me…
Averaging and Cosmological Observations
A. A. Coley
The gravitational field equations on cosmological scales are obtained by averaging the Einstein field equations of general relativity. By assuming spatial homogeneity and isotropy…