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Interacting phantom dark energy: new accelerating scaling attractors

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arxiv 2411.18300 v2 pith:3YV7OXQV submitted 2024-11-27 gr-qc astro-ph.COmath-phmath.MP

classification gr-qcastro-ph.COmath-phmath.MP
keywords acceleratingdarkphantomscalinganalysisattractorsenergyforms
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We perform a detailed investigation of interacting phantom cosmology, by applying the powerful method of dynamical system analysis. We consider two well-studied interaction forms, namely one global and one local one, while the novel ingredient of our work is the examination of new potentials for the phantom field. Our analysis shows the existence of saddle matter-dominated points, stable dark-energy dominated points, and scaling accelerating solutions, that can attract the Universe at late times. As we show, some of the stable accelerating scaling attractors, in which dark matter and dark energy can co-exist, alleviating the cosmic coincidence problem, are totally new, even for the previously studied interaction rates, and arise purely from the novel potential forms.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Accelerating scaling solutions from dark matter particle creation

    gr-qc 2026-04 unverdicted novelty 5.0 of 10

    Accelerating scaling attractors without dark energy appear only when the interaction is controlled by DM density and energy flows from DM to a barotropic fluid.

  2. Revise the Dark Matter-Phantom Scalar Field Interaction

    gr-qc 2024-12 conditional novelty 5.0 of 10

    A compactified phase-space analysis of four dark matter/phantom scalar interactions shows one model avoids Big Rip singularities, one needs a small coupling to avoid them, and two have singular surfaces that make them...

  3. An overview of what current data can (and cannot yet) say about evolving dark energy

    astro-ph.CO 2025-02 conditional novelty 4.0 of 10

    The apparent preference for evolving dark energy depends strongly on which supernova catalog and which BAO survey are used, and is not robust across all independent data combinations.

  4. Cosmological Interactions with Phantom Scalar Field: Revisiting Background Phase-Space Analysis with Compactified Variables

    gr-qc 2025-01 conditional novelty 4.0 of 10

    A compactified variable transformation for phantom scalar field cosmology reproduces prior Hubble-normalized results and shows that chosen interaction terms avoid Big Rip singularities.

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