Instant preheating mechanism and UHECR
arXiv:astro-ph/0402413 · doi:10.1103/PhysRevD.70.023003
Abstract
Top-down models assume that the still unexplained Ultra High Energy Cosmic Rays (UHECR's) are the decay products of superheavy particles. Such particles may have been produced by one of the post-inflationary reheating mechanisms and may account for a fraction of the cold dark matter. In this paper, we assess the phenomenological applicability of the simplest instant preheating framework not to describe a reheating process, but as a mechanism to generate relic supermassive particles as possible sources of UHECR's. We use cosmic ray flux and cold dark matter observational data to constrain the parameters of the model.
7 pages, 2 figures, submitted to PRD
References in corpus (24)
- Towards the Theory of Reheating After Inflation
- Reheating after Inflation
- Universe Reheating after Inflation
- Origin and Propagation of Extremely High Energy Cosmic Rays
- Superheavy dark matter
- Energy determination in the Akeno Giant Air Shower Array experiment
- Instant Preheating
- On the gravitational production of superheavy dark matter
- Measuring and Understanding the Universe
- Extremely high energy cosmic rays from relic particle decays
- A new estimate of the extragalactic radio background and implications for ultra-high-energy gamma-ray propagation
- Matter Creation via Vacuum Fluctuations in the Early Universe and Observed Ultra-High Energy Cosmic Ray Events
- The high energy cosmic ray spectrum from relic particle decay
- Ultra High Energy Cosmic Rays and Inflation Relics
- On the statistical significance of the GZK feature in the spectrum of ultra high energy cosmic rays
- Strongly Interacting Neutrinos and the Highest Energy Cosmic Rays
- Classical inflaton field induced creation of superheavy dark matter
- On the Evidence for Clustering in the Arrival Directions of AGASA's Ultrahigh Energy Cosmic Rays
- Production of massive stable particles in inflaton decay
- Monte Carlo simulation for jet fragmentation in SUSY-QCD
- Detailed analysis of the decay spectrum of a super-heavy X particle
- Preheating in Quintessential Inflation
- Primordial black holes as a source of extremely high energy cosmic rays
- Bounds on Direct Couplings of Superheavy Metastable Particles to the Inflaton Field from Ultra High Energy Cosmic Ray Events
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- Variable gravity: A suitable framework for quintessential inflation
- Quintessential Inflation on the Brane and the Relic Gravity Wave Background
- Quintessential inflation with canonical and noncanonical scalar fields and Planck 2015 results
- Soft Gravitons & the Memory Effect for Plane Gravitational Waves
- Unification of inflation and dark energy {\it à la} quintessential inflation
- A class of quintessential inflation models with parameter space consistent with BICEP2
- Quintessential Inflation in a thawing realization
- Relic gravitational waves from Quintessential Inflation
- Reheating the D-brane universe via instant preheating
- Compactifications of Deformed Conifolds, Branes and the Geometry of Qubits