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Dynamics of Einstein–Aether scalar field cosmology

Published version
Peer-reviewed

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Authors

Papagiannopoulos, G 
Basilakos, S 
Barrow, JD 

Abstract

© 2019, The Author(s). We study the cosmological evolution of the field equations in the context of Einstein–Aether cosmology by including a scalar field in a spatially flat Friedmann–Lemaître–Robertson–Walker spacetime. Our analysis is separated into two separate where a pressureless fluid source is included or absent. In particular, we determine the critical points of the field equations and we study the stability of the specific solutions. The limit of general relativity is fully recovered, while the dynamical system admits de Sitter solutions which can describe the past inflationary era and the future late-time attractor. Results for generic scalar field potentials are presented while some numerical behaviours are given for specific potential forms.

Description

Funder: Science and Technology Facilities Council; doi: http://dx.doi.org/10.13039/501100000271

Keywords

5107 Particle and High Energy Physics, 5101 Astronomical Sciences, 5102 Atomic, Molecular and Optical Physics, 51 Physical Sciences

Journal Title

European Physical Journal C

Conference Name

Journal ISSN

1434-6044
1434-6052

Volume Title

79

Publisher

Springer Science and Business Media LLC
Sponsorship
Science and Technology Facilities Council (ST/P000673/1)