11 citations · 20 across the 5 of their papers we have counts for
5 papers
Conserved Quantities in Expanding Gödel Cosmology
Alexander Leithes
At linear order we study perturbations to a Gödel background spacetime which includes expansion in addition to rotation. We investigate the transformation behaviour of these pertur…
Perturbations in Lemaitre-Tolman-Bondi and Assisted Coupled Quintessence Cosmologies
Alexander Leithes
In this thesis we present research into linear perturbations in Lemaitre-Tolman-Bondi (LTB) and Assisted Coupled Quintessence (ACQ) Cosmologies. First we give a brief overview of t…
PYESSENCE - Generalised Coupled Quintessence Linear Perturbation Python Code - User Guide
Alexander Leithes
This paper is a guide to the installation and use of the Python package PYESSENCE. PYESSENCE is designed to evolve linear perturbations to Coupled Quintessence models with a arbitr…
Linear Density Perturbations in Multifield Coupled Quintessence
Alexander Leithes, Karim A. Malik, David J. Mulryne +1
We study the behaviour of linear perturbations in multifield coupled quintessence models. Using gauge invariant linear cosmological perturbation theory we provide the full set of g…
Conserved Quantities in Lemaitre-Tolman-Bondi Cosmology
Alexander Leithes, Karim A. Malik
We study linear perturbations to a Lema{\^ı}tre-Tolman-Bondi (LTB) background spacetime. Studying the transformation behaviour of the perturbations under gauge transformations, we…