Authors derive CMB power spectra from burst particle production in inflation, report a mild 2σ hint in joint Planck+ACT data for features on 3-10 Mpc scales, and show power-spectrum constraints outperform matched filters for lighter particles.
ACT Implications for Hilltop Inflation, 7 2025
4 Pith papers cite this work. Polarity classification is still indexing.
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Curvaton coupling relaxes initial tuning in hilltop inflation and revives the sub-Planckian quartic model while remaining consistent with cosmological observations.
Warm inflation with linear dissipation and quartic potential is realized in Weyl geometric gravity, incorporating the Weyl vector to produce a smooth transition to radiation domination with observables consistent with ACT data.
Unitarity-conserving Peccei-Quinn inflation agrees with ACT data within 1 sigma and allows axion decay constants up to 6.4e13 GeV without post-inflation symmetry restoration, unlike the conventional model.
citing papers explorer
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Probing inflationary particle production with the CMB power spectrum
Authors derive CMB power spectra from burst particle production in inflation, report a mild 2σ hint in joint Planck+ACT data for features on 3-10 Mpc scales, and show power-spectrum constraints outperform matched filters for lighter particles.
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Curvaton-assisted hilltop inflation
Curvaton coupling relaxes initial tuning in hilltop inflation and revives the sub-Planckian quartic model while remaining consistent with cosmological observations.
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Warm inflation in Weyl geometric gravity
Warm inflation with linear dissipation and quartic potential is realized in Weyl geometric gravity, incorporating the Weyl vector to produce a smooth transition to radiation domination with observables consistent with ACT data.
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Conventional and Unitarity-Conserving Peccei-Quinn Inflation Models and ACT
Unitarity-conserving Peccei-Quinn inflation agrees with ACT data within 1 sigma and allows axion decay constants up to 6.4e13 GeV without post-inflation symmetry restoration, unlike the conventional model.