Cyclic Szekeres universes

Cyclic Szekeres universes

We consider the Szekeres universe with an inhomogeneous dust fluid and a homogeneous and isotropic ghost matter source with equation of state p g = ( γ - 1 ) ρ g , where γ is a constant. The field equations determine two families of spacetimes which describe homogeneous Kantowski–Sachs universes and...

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Veröffentlicht in:The European physical journal. C, Particles and fields Particles and fields, 2019-05, Vol.79 (5), p.1-8, Article 379
Hauptverfasser: Barrow, John D., Paliathanasis, Andronikos
Format: Artikel
Sprache:eng
Schlagworte:
Astronomy
Astrophysics and Cosmology
Critical point
Elementary Particles
Equations of state
Ghosts
Hadrons
Heavy Ions
Measurement Science and Instrumentation
Nuclear Energy
Nuclear Physics
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Regular Article - Theoretical Physics
String Theory
Technical institutes
Technology
Universe
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Beschreibung
Zusammenfassung:We consider the Szekeres universe with an inhomogeneous dust fluid and a homogeneous and isotropic ghost matter source with equation of state p g = ( γ - 1 ) ρ g , where γ 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.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-019-6890-5