The Radionactive Universe
arXiv:hep-ph/0306159 · doi:10.1088/1475-7516/2003/07/008
Abstract
In a large class of extra-dimensional models, a scalar degree of freedom known as the radion is long-lived, or even stable, on cosmological scales. In this paper we investigate the impact of radionactivity on the evolution of the universe. We demonstrate that whether the radion overcloses the universe, constitutes the dark matter, is the inflaton, the curvaton, or does not play any role in cosmology, depends crucially on the ratio between the energy densities stored in the radion and in the inflaton at the time of inflation. We discuss the general difficulties reconciling models with low compactification scale (i.e., TeV scale) with the simple picture of inflation.
v3: cosmetic changes
References in corpus (12)
- The primordial density perturbation in the curvaton scenario
- Kaluza-Klein Dark Matter
- Standard Model Higgs from Higher Dimensional Gauge Fields
- Unification of Higgs and Gauge Fields in Five Dimensions
- Elastic Scattering and Direct Detection of Kaluza-Klein Dark Matter
- The Impact of Universal Extra Dimensions on the Unitarity Triangle and Rare K and B Decays
- Universal Extra Dimensions and the Higgs Boson Mass
- Probing Kaluza-Klein Dark Matter with Neutrino Telescopes
- Radion Assisted Gauge Inflation
- A New Noncommutative Product on the Fuzzy Two-Sphere Corresponding to the Unitary Representation of SU(2) and the Seiberg-Witten Map
- Finite temperature Z(N) phase transition with Kaluza-Klein gauge fields
- The invisible axion in a Randall-Sundrum universe
Cited by in corpus (29)
- Dark Matter and Collider Phenomenology of Universal Extra Dimensions
- Folded Supersymmetry and the LEP Paradox
- Warped Unification, Proton Stability and Dark Matter
- Precise Calculation of the Relic Density of Kaluza-Klein Dark Matter in Universal Extra Dimensions
- An Introduction to Extra Dimensions
- Graviton Cosmology in Universal Extra Dimensions
- The Concordance Cosmic Star Formation Rate: Implications from and for the Supernova Neutrino and Gamma Ray Backgrounds
- Kaluza-Klein Dark Matter and Galactic Antiprotons
- Minimal Universal Extra Dimensions in CalcHEP/CompHEP
- Multidimensional cosmological models: cosmological and astrophysical implications and constraints
- Gamma Ray Lines from a Universal Extra Dimension
- Angular Correlations of the MeV Cosmic Gamma Ray Background
- Scherk-Schwarz Supersymmetry Breaking with Radion Stabilization
- Gravitons and Dark Matter in Universal Extra Dimensions
- Relic abundance of dark matter in universal extra dimension models with right-handed neutrinos
- Solving cosmological problem in universal extra dimension models by introducing Dirac neutrino
- A Dark Matter Candidate from an Extra (Non-Universal) Dimension
- Indirect Detection of Dirac Right-Handed Neutrino Dark Matter
- Vector fluctuations from multidimensional curvature bounces
- Massive Gravitons as Feebly Interacting Dark Matter Candidates
- Status Report on Universal Extra Dimensions After LHC8
- Flux Compactifications: Stability and Implications for Cosmology
- Implications for the hierarchy problem, inflation and geodesic motion from fiber fabric of spacetime
- Warped Radion Dark Matter
- Cosmological Perturbations During Radion Stabilization
- Brane World Cosmology, the CMB and the Radion
- Brane Cosmology and KK Gravitinos
- Radion Inflation in Higher-Dimensional Gravity Theory
- Model building by coset space dimensional reduction in ten-dimensions with direct product gauge symmetry