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The dynamics of scalar-field Quintom cosmological models

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arxiv 2204.06538 v2 pith:QSQEQ5JO submitted 2022-04-13 gr-qc

Jonathan Tot (Dalhousie U.) , Balkar Yildirim (Dalhousie U.) , Alan Coley (Dalhousie U.) , Genly Leon (Catolica del Norte U. , DUT , Durban) This is my paper · ORCID
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keywords quintomcosmologicalcosmologiesmodelanalysisbehaviourbouncingclass
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abstract

We shall present a complete (compactified) dynamical systems analysis of the Quintom model comprised of an interacting quintessence scalar field and a phantom. We find a range for the model parameters $\kappa, \lambda$ such that there are expanding Quintom cosmologies that undergo two inflationary periods, and this behaviour is not destabilized by spatial curvature. We also discuss a class of bouncing cosmologies. Finally, the linear cosmological perturbations are studied.

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Cited by 1 Pith paper

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  1. Averaging Dynamics of Scalar Field-Matter Interacting Models in Anisotropic Universes: The Locally Rotationally Symmetric Bianchi I Spacetime

    gr-qc 2025-08 reject novelty 4.0 of 10

    The authors apply averaging methods to classify late-time attractors for nine interacting dark sector models in Bianchi I cosmology, but the general interaction formula does not match the specific models analyzed.

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