http://arxiv.org/abs/1404.4976
The observed baryon asymmetry, as well as potentially an asymmetry in the dark matter sector, can be produced through dissipative particle production during inflation. A distinctive feature of this mechanism is the generation of matter isocurvature perturbations that are fully (anti-)correlated with the dominant adiabatic curvature perturbations. We show that chaotic warm inflation models yield anti-correlated isocurvature modes that may partially or even completely screen the contribution of primordial gravity waves to the CMB temperature power spectrum. This allows for a large tensor-to-scalar ratio and can reconcile the recent detection of B-mode polarization by the BICEP2 experiment with the upper bound placed by Planck.
M. Bastero-Gil, A. Berera, R. Ramos, et. al.
Tue, 22 Apr 14
49/54
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