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Scalaron the mighty: producing dark matter and baryon asymmetry at reheating

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arxiv 1009.2448 v3 pith:42KC4QFI submitted 2010-09-13 hep-ph astro-ph.COgr-qc

classification hep-phastro-ph.COgr-qc
keywords scalarondarkmatterasymmetrybaryongravityinflationneutrino
verification ladder T0 review T1 audit T2 compute T3 formal
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In R^2-inflation scalaron slow roll is responsible for the inflationary stage, while its oscillations reheat the Universe. We find that the same scalaron decays induced by gravity can also provide the dark matter production and leptogenesis. With R^2-term and three Majorana fermions added to the Standard Model, we arrive at the phenomenologically complete theory capable of simultaneously explaining neutrino oscillations, inflation, reheating, dark matter and baryon asymmetry of the Universe. Besides the seesaw mechanism in neutrino sector, we use only gravity, which solves all the problems by exploiting scalaron.

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Cited by 10 Pith papers

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

  1. Inflation and Reheating by Dynamical Torsion

    hep-ph 2026-07 conditional novelty 6.0 of 10

    The dynamical-torsion inflaton decays via chiral anomalies and Yukawa-assisted three-body channels, yielding a reheating temperature of 10^5–10^7 GeV and testable CMB/GW predictions.

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    Reconciling Starobinsky inflation with ACT data requires fine-tuned higher-curvature scales, stiff reheating with ω_reh>1/3, or negative-energy towers, all hard to motivate from UV completions.

  3. Higgs boson mass and thermal wino dark matter from Starobinsky supergravity with the MSSM

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    Starobinsky supergravity coupled to the MSSM links the CMB inflationary scale to the Higgs boson mass (~125 GeV) and predicts thermal wino dark matter at ~3 TeV, testable at future colliders and direct detection experiments.

  4. Simulating first-order phase transition during inflation

    hep-ph 2026-02 conditional novelty 6.0 of 10

    A GUT-scale first-order phase transition embedded in Starobinsky inflation completes near the end of inflation, and lattice simulations confirm the predicted oscillatory gravitational-wave signal.

  5. Post-inflationary enhancement of adiabatic perturbations in modular cosmology

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    In modular inflation models, entropic perturbations frozen during inflation are converted into curvature perturbations after inflation, producing an enhanced power spectrum while preserving the spectral index ns.

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    A slightly open universe with Ω_k ≈ 3×10^{-3} pulls n_s down to ~0.969, reconciling plateau inflation models with combined CMB and DESI data.

  7. Tachyonic Encore: A universal shift of inflationary observables

    hep-th 2026-06 unverdicted novelty 5.0 of 10

    A light axion spectator induces post-inflation tachyonic phases that produce a nearly scale-invariant boost to the curvature power spectrum and alter key inflationary observables in a largely potential-independent manner.

  8. High Frequency Spectrum of Primordial Gravitational Waves

    hep-ph 2026-01 unverdicted novelty 5.0 of 10

    High-frequency primordial gravitational waves extend to higher frequencies due to post-inflation inflaton dynamics, and their detailed spectrum shape can distinguish inflation models.

  9. A cross-epoch endpoint-consistency test of a single effective scaling from dark energy to inflation

    astro-ph.CO 2026-06 unverdicted novelty 4.0 of 10

    A single power-law effective scaling anchored at today's Hubble rate is extrapolated to inflation and required to match the Starobinsky plateau within O(1) factors, selecting γ ≈ 0.49 and β ≈ 0.68.

  10. On Legacy of Starobinsky Inflation

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    A memorial review of the Starobinsky inflation model that proposes a deformation for primordial black hole production and discusses superstring quantum corrections plus universal reheating.

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