100 citations · 311 across the 6 of their papers we have counts for
6 papers
Dynamical systems analysis of anisotropic cosmologies in -gravity
Naureen Goheer, Jannie A. Leach, Peter K. S. Dunsby
In this paper we study the dynamics of {\it orthogonal spatially homogeneous} Bianchi cosmologies in -gravity. We construct a compact state space by dividing the state space i…
Compactifying the state space for alternative theories of gravity
Naureen Goheer, Jannie A. Leach, Peter K. S. Dunsby
In this paper we address important issues surrounding the choice of variables when performing a dynamical systems analysis of alternative theories of gravity. We discuss the advant…
An analysis of the shear dynamics in Bianchi I cosmologies with -gravity
Jannie A. Leach, Peter K. S. Dunsby, Sante Carloni
We consider the case of -gravity and perform a detailed analysis of the dynamics in Bianchi I cosmologies which exhibit {\it local rotational symmetry} (LRS). We find exact so…
Cosmological dynamics of Scalar--Tensor Gravity
S Carloni, J A Leach, S Capozziello +1
We study the phase--space of FLRW models derived from Scalar--Tensor Gravity where the non--minimal coupling is and the effective potential is . Our analysis…
Shear dynamics in Bianchi I cosmologies with R^n-gravity
Jannie A Leach, Sante Carloni, Peter K S Dunsby
We give the equations governing the shear evolution in Bianchi spacetimes for general f(R)-theories of gravity. We consider the case of R^n-gravity and perform a detailed analysis…
Conditional escape of gravitons from the brane
Jannie A. Leach, William M. Lesame
In this paper we consider a cosmological Friedmann Robertson Walker brane world imbedded in a 5-dimensional anti-de Sitter Schwarzschild bulk. We show, using potential diagrams, th…