Multiple $\Lambda$CDM cosmology with string landscape features and future singularities

Abstract

Multiple $\Lambda$CDM cosmology is studied in a way that is formally a classical analog of the Casimir effect. Such cosmology corresponds to a time-dependent dark fluid model or, alternatively, to its scalar field presentation, and it motivated by the string landscape picture. The future evolution of the several dark energy models constructed within the scheme is carefully investigated. It turns out to be almost always possible to choose the parameters in the models so that they match the most recent and accurate astronomical values. To this end, several universes are presented which mimick (multiple) $\Lambda$CDM cosmology but exhibit Little Rip, asymptotically de Sitter, or Type I, II, III, and IV finite-time singularity behavior in the far future, with disintegration of all bound objects in the cases of Big Rip, Little Rip and Pseudo-Rip cosmologies.

LaTeX 11 pages, 10 figures

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Cited by in corpus (3)

• Finite-time Cosmological Singularities and the Possible Fate of the Universe
• On a phenomenology of the accelerated expansion with a varying ghost dark energy
• Cosmic evolution of scalar fields with multiple vacua: generalized DBI and quintessence