Dark Matter via Many Copies of the Standard Model

Abstract

We propose a cosmological scenario based on the assumption that the Standard Model possesses a large number of copies. It is demonstrated that baryons in the hidden copies of the standard model can naturally account for the dark matter. The right abundance of the hidden-sector baryons and the correct spectrum of density perturbations are simultaneously generated during modulated reheating. We show that for the natural values of inflaton coupling constants, dictated by unitarity, the dark-matter abundance is predicted to be proportional to the ratio of observed cosmological parameters: the square of the amplitude of cosmological perturbations and the baryon-to-photon number ratio.

11 pages, 2 figures

References in corpus (11)

• Observation of an anomalous positron abundance in the cosmic radiation
• Black Hole Bound on the Number of Species and Quantum Gravity at LHC
• Realistic sterile neutrino dark matter with keV mass does not contradict cosmological bounds
• Fitting the Gamma-Ray Spectrum from Dark Matter with DMFIT: GLAST and the Galactic Center Region
• Mirror dark matter and the new DAMA/LIBRA results: A simple explanation for a beautiful experiment
• Cosmology With Many Light Scalar Fields: Stochastic Inflation and Loop Corrections
• Simple Bounds from the Perturbative Regime of Inflation
• Black Hole Entropy and Gravity Cutoff
• Gravitational inflaton decay and the hierarchy problem
• Eternal Chaotic Inflation is Prohibited by Weak Gravity Conjecture
• On Number of Nflation Fields