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Ultra High Energy Cosmic Rays and Inflation Relics

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arxiv hep-ph/9903542 v1 pith:EDNN6OUU submitted 1999-03-31 hep-ph astro-ph

classification hep-phastro-ph
keywords cosmiccreationinflationraysbeyondcut-offdefectsenergies
verification ladder T0 review T1 audit T2 compute T3 formal
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There are two processes of matter creation after inflation that may be relevant to the resolution of the puzzle of cosmic rays observed with energies beyond GZK cut-off: 1) gravitational creation of superheavy (quasi)stable particles, and 2) non-thermal phase transitions leading to formation of topological defects. We review both possibilities.

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Cited by 3 Pith papers

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

  1. When direct detection constrains reheating temperature: freeze-in with stronger couplings and inflaton-seeded freeze-in

    hep-ph 2026-06 unverdicted novelty 5.0 of 10

    Stronger couplings or inflaton-seeded initial abundance allow freeze-in dark matter to match the relic density while evading DAMIC-M and PandaX bounds for reheating temperatures below the electroweak scale.

  2. Searching for EeV photons with Telescope Array Surface Detector and neural networks

    astro-ph.GA 2025-12 unverdicted novelty 5.0 of 10

    Telescope Array reports upper limits on EeV photon flux of <2.3e-3 above 10^19 eV and <3.0e-4 above 10^20 eV using a neural network classifier fine-tuned on experimental data.

  3. Various constraints on BSM physics from extensive air showers and from ultra-high energy gamma-ray and neutrino searches

    astro-ph.HE 2025-01 conditional novelty 1.0 of 10

    A faithful review of the strongest current bounds on Lorentz violation, superheavy dark matter, cosmic strings, and sterile neutrinos from ultra-high-energy cosmic-ray, gamma-ray, and neutrino searches.

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