Dynamics and cosmological evolution in Λ-varying cosmology

We study the dynamical properties of a large body of varying vacuum cosmologies for which dark matter interacts with vacuum. In particular, performing the critical point analysis we investigate the existence and the stability of cosmological solutions which describe de-Sitter, radiation and matter d...

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Bibliographic Details
Published inThe European physical journal. C, Particles and fields Vol. 80; no. 1
Main Authors Papagiannopoulos, G., Tsiapi, Pavlina, Basilakos, Spyros, Paliathanasis, Andronikos
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 2020
Springer Nature B.V
Subjects
Astronomy
Astrophysics and Cosmology
Cosmology
Critical point
Dark matter
Elementary Particles
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
Stability analysis
String Theory
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Summary:We study the dynamical properties of a large body of varying vacuum cosmologies for which dark matter interacts with vacuum. In particular, performing the critical point analysis we investigate the existence and the stability of cosmological solutions which describe de-Sitter, radiation and matter dominated eras. We find several cases of varying vacuum models that admit stable critical points, hence they can be used in describing the cosmic history.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-019-7600-z