2014/04/30 by Mar Bastero-Gil, Arjun Berera, Rudnei O. Ramos +2 · 2 citations
Earth and Planetary Sciences · Physics and Astronomy · #Adiabatic process #Anisotropy #Astrophysics #Asymmetry #Baryogenesis #Baryon asymmetry #Black Holes and Theoretical Physics #Cosmic background radiation #Cosmic microwave background #Cosmological perturbation theory #Cosmology and Gravitation Theories #Curvature #Dissipative system #Eternal inflation #Geophysics and Gravity Measurements #Gravitational wave #Inflation (cosmology) #Inflaton #Non-Gaussianity #Particle physics #Physics #Quantum mechanics #Spectral density #Theoretical physics #astro-ph.CO #hep-ph #hep-th
paper · pdf · doi:10.1088/1475-7516/2014/10/053
published as JCAP 1410, 053 (2014) · 21 pages, 5 figures; minor modifications and added references; matches version published in JCAP
openalex publication_date 2014/10/22 · arxiv created 2014/10/28 · arxiv updated 2014/10/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.