Non minimally coupled condensate cosmologies: a phase space analysis

2014/01/31 by Sante Carloni, Stefano Vignolo, Roberto Cianci · 1 citation
Physics and Astronomy · #gr-qc

paper · pdf · doi:10.1088/0264-9381/31/18/185007

published as Class.Quant.Grav. 31 (2014) 185007 · 25 pages, 4 figures, submitted to Classical and Quantum Gravity

arxiv created 2014/03/11 · arxiv updated 2018/04/20

Abstract

We present an analysis of the phase space of cosmological models based on a non minimal coupling between the geometry and a fermionic condensate. We obtain that the strong constraint coming from the Dirac equations allows a detailed design of the cosmology of these models and at the same time guarantees an evolution towards a state indistinguishable from General Relativistic cosmological models. In this light, we show how the use of some specific potentials is able to reproduce naturally two de Sitter phases separated by a power law expansion which could be an interesting model for the unification of an inflationary phase and a dark energy era.

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