Dynamics and cosmological evolution in {\Lambda}-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 inarXiv.org
Main Authors Papagiannopoulos, G, Tsiapi, Pavlina, Basilakos, Spyros, Paliathanasis, Andronikos
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 11.01.2020
Subjects
Cosmology
Critical point
Dark matter
Physics - General Relativity and Quantum Cosmology
Stability analysis
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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:2331-8422
DOI:10.48550/arxiv.1911.12431