Regular Article – Theoretical Physics
Exact Kantowski–Sachs spacetimes in Einstein–Aether scalar field theory
Departamento de Matemáticas, Universidad Católica del Norte, Casilla 1280, Avda. Angamos 0610, Antofagasta, Chile
2 Institute of Systems Science, Durban University of Technology, 4000, Durban, South Africa
3 Center for Theoretical Physics, College of Physics Sichuan University, 610064, Chengdu, China
Accepted: 30 November 2020
Published online: 14 December 2020
Exact and analytic solutions in Einstein–Aether scalar field theory with Kantowski–Sachs background space are determined. The theory of point symmetries is applied to determine the functional form of the unknown functions which defines the gravitational model. Conservation laws are applied to reduce the order of the field equations and write the analytic solution. Moreover, in order to understand the physical behaviour of the cosmological model a detailed analysis of the asymptotic behaviour for solutions of the gravitational field equations is performed.
© The Author(s) 2020
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