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Axion Dark Matter and Planck favor non-minimal couplings to gravity

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arxiv 1304.7270 v3 pith:S36KXDSA submitted 2013-04-26 hep-ph astro-ph.COgr-qchep-th

Sarah Folkerts , Cristiano Germani , Javier Redondo This is my paper · ORCID
classification hep-phastro-ph.COgr-qchep-th
keywords darkmatteraxionnon-minimalcouplingsgravityisocurvaturekinetic
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Constraints on inflationary scenarios and isocurvature perturbations have excluded the simplest and most generic models of dark matter based on QCD axions. Considering non-minimal kinetic couplings of scalar fields to gravity substantially changes this picture. The axion can account for the observed dark matter density avoiding the overproduction of isocurvature fluctuations. Finally, we show that assuming the same non-minimal kinetic coupling to the axion (dark matter) and to the standard model Higgs boson (inflaton) provides a minimal picture of early time cosmology.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. OpenAlex reports about 44 citations worldwide. Full citation record

  1. Suppressing Extra-Dimensional Axion Isocurvature Dynamically

    hep-ph 2026-07 conditional novelty 6.0 of 10

    Radion dynamics in warped 5D models enhance the axion decay constant during inflation, satisfying CMB isocurvature bounds at higher Hubble scales while restoring the QCD window afterward.

  2. Phenomenology of Inflaton-Driven Early QCD Confinement and Solution to Axion Isocurvature Problem

    astro-ph.CO 2026-06 unverdicted novelty 6.0 of 10

    Inflaton-gluon coupling induces early QCD confinement to suppress axion isocurvature perturbations and enable axion dark matter production in alpha-attractor inflation models.

  3. QCD Axion on Hilltop by a Phase Shift of $\pi$

    hep-ph 2019-08 conditional novelty 5.0 of 10

    A heavy axion inflaton can shift the QCD axion potential by π, placing the QCD axion at the hilltop and allowing f_a ≳ 3×10^9 GeV to explain all dark matter.

  4. The landscape of QCD axion models

    hep-ph 2020-03 unverdicted novelty 2.0 of 10

    Review classifies QCD axion models extending the standard mass-coupling window and updates bounds from cosmology, astrophysics, and experiments.

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