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Dynamics and cosmological evolution in {\Lambda}-varying cosmology

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arxiv 1911.12431 v2 pith:TZRDHHPG submitted 2019-11-27 gr-qc

G. Papagiannopoulos , Pavlina Tsiapi , Spyros Basilakos , Andronikos Paliathanasis This is my paper · ORCID
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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.

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Cited by 1 Pith paper

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  1. Can decaying vacuum solve the H_0 Tension?

    astro-ph.CO 2024-12 conditional novelty 5.0 of 10

    Two vacuum-decay models fitted to combined cosmological data give a positive decay rate at about six sigma and H0 near 71.6 km/s/Mpc, easing the Hubble tension.

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