منابع مشابه
Simplified models of mixed dark matter
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Recent large scale structure observations, including COBE, have prompted many authors to discuss modifications of the standard Cold Dark Matter model. Two of these, a tilted spectrum and a gravitational wave contribution to COBE, are at some level demanded by theory under the usual assumption that inflation generates the primeval perturbations. The third, whose motivation comes by contrast from...
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An analysis of cosmological mixed dark matter models in spatially flat Friedmann Universe with zero Λterm is presented. We argue that the introduction of cosmic gravity waves helps to satisfy observational constraints. The number of parameters is equal to 5, they are (1) σ8, the dispersion of the mass fluctuations in the sphere with radius 8hMpc, (2) n, the slope of the density perturbation spe...
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We have considered nonuniversal gaugino mass models of supergravity, arising from a mixture of two superfield contributions to the gauge kinetic term, belonging to a singlet and a nonsinglet representation of the GUT group. In particular we analyse two models, where the contributing superfields belong to the singlet and the 75-dimensional, and the singlet and the 200-dimensional representations...
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ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2014
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2014/02/011