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Model-Independent Perspectives on Coupled Dark Energy and the Swampland

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arxiv 2006.14511 v2 pith:LDJB2Z4F submitted 2020-06-25 astro-ph.CO gr-qchep-phhep-th

Model-Independent Perspectives on Coupled Dark Energy and the Swampland

classification astro-ph.CO gr-qchep-phhep-th
keywords darkcoupledenergyinteractionssectorswamplandcriteriamodel-independent
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present a general model-independent approach to study the coupled dark energy and the string Swampland criteria. We show how the dark sector interaction is degenerated with the equation of state of dark energy in the context of the expansion of the Universe. With priors for either of them, the dynamics of dark energy and the dark sector interactions can be reconstructed together with the bounds of the Swampland criteria. Combining cosmic chronometers, baryon acoustic oscillation (BAO), and Type Ia supernovae our results suggest a mild $1 \sigma$ significance of dark sector interactions at low redshift for the coupled quintessence. The Lyman-$\alpha$ BAO at $z=2.34$ leads a $2 \sigma$ signal of nonzero interactions at high redshift. The implications for coupled quintessence are discussed.

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Cited by 1 Pith paper

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

  1. Breaking the Dark Sector Degeneracy with Nonparametric Expansion--Growth Reconstruction

    astro-ph.CO 2026-07 unverdicted novelty 6.0

    Joint nonparametric expansion–growth reconstruction finds no significant dark-sector interaction or dark-energy dynamics, remaining consistent with ΛCDM over 0≲z≲2.