Work

Cyclic Szekeres universes

Year: 2019

Type: article

Abstract: We consider the Szekeres universe with an inhomogeneous dust fluid and a homogeneous and isotropic ghost matter source with equation of state $$p_{g}=( \gamma -1) \rho _{g},$$ where $$\gamma $$ is a constant. The field equations determine two families of spacetimes which describe homogeneous Kantowski–Sachs universes and inhomogeneous Friedmann universes. The ghost field permits static and cyclic solutions to exist. The stability of the Einstein static and cyclic solutions are studied with a critical point analysis.

Source: The European Physical Journal C

DOI: 10.1140/epjc/s10052-019-6890-5

Authors: John D. Barrow, Andronikos Paliathanasis

Institutions: University of Cambridge, Austral University of Chile, Durban University of Technology

Language: Hungarian

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: Science and Technology Facilities Council, Fondo de Fomento al Desarrollo Científico y Tecnológico

Awards: G3563244976, G8831011986