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Interacting quintessence solution to the coincidence problem

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arxiv astro-ph/0303145 v1 pith:OIGQC6BI submitted 2003-03-06 astro-ph gr-qc

Luis P. Chimento , Alejandro S. Jakubi , Diego Pavon , Winfried Zimdahl This is my paper · ORCID
classification astro-phgr-qc
keywords matteracceleratedcoincidenceexpansionfluidproblemsolutionuniverse
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We show that a suitable interaction between a scalar field and a matter fluid in a spatially homogeneous and isotropic spacetime can drive the transition from a matter dominated era to an accelerated expansion phase and simultaneously solve the coincidence problem of our present Universe. For this purpose we study the evolution of the energy density ratio of these two components. We demonstrate that a stationary attractor solution is compatible with an accelerated expansion of the Universe. We extend this study to account for dissipation effects due to interactions in the dark matter fluid. Finally, Type Ia supernovae and primordial nucleosynthesis data are used to constrain the parameters of the model.

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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. The Status of Single Scalar Field Dark Energy

    astro-ph.CO 2026-07 conditional novelty 4.5 of 10

    Cosmological data can constrain only a handful of EFT parameters for single-scalar dark energy; extended models show modest preference over Λ but remain underdetermined and challenged by fifth forces and screening.

  3. Generalizing the interacting dilatonic ghost condensate as a dark energy model

    gr-qc 2026-06 unverdicted novelty 4.0 of 10

    Generalizes the interacting dilatonic ghost condensate dark energy model, performs phase-space analysis for non-interacting and two interacting cases, and reports parameter constraints from Cosmic Chronometers, Panthe...

  4. Dark energy and cosmic acceleration

    astro-ph.CO 2025-02 unverdicted

    A review chapter summarizing the history, theory, and current observations of dark energy, presenting no new research results.

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