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Observational implications of mattergenesis during inflation

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Original languageEnglish
Article number053
JournalJournal of Cosmology and Astroparticle Physics (JCAP)
Issue number10
Publication statusPublished - 1 Oct 2014


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. The tensor-to-scalar ratio inferred from the latter may thus be parametrically smaller than the one deduced from B-mode polarization maps, which is particularly relevant in the light of the recently announced results of the BICEP2 experiment.

    Research areas

  • baryon asymmetry, ination, particle physics - cosmology connection, supersymmetry and cosmology

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