Dark Matter via many copies of the Standard Model

Journal Article · Sat Aug 01 00:00:00 EDT 2009 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2009/08/009· OSTI ID:22273217

Dvali, Gia ^[1]; Sawicki, Ignacy; Vikman, Alexander ^[2]

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1. Theory Division, CERN, CH-1211 Geneva 23 (Switzerland)
2. Center for Cosmology and Particle Physics, Department of Physics, New York Univeristy, New York, NY 10003 (United States)

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.

• OSTI ID: 22273217
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2009, Issue 08; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
BARYONS
COSMIC PHOTONS
COSMOLOGY
COUPLING CONSTANTS
DISTURBANCES
INFLATIONARY UNIVERSE
INFLATONS
NONLUMINOUS MATTER
STANDARD MODEL
UNITARITY