2003/11/30 by Anupam Mazumdar, Abdel Pérez-Lorenzana, A. Pérez-Lorenzana · 1 citation
Physics and Astronomy · #Astrophysics #Asymmetry #Baryon #Baryon asymmetry #Black Holes and Theoretical Physics #Cosmic background radiation #Cosmic microwave background #Cosmology and Gravitation Theories #Electron #Inflation (cosmology) #Inflaton #Leptogenesis #Lepton #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Primordial fluctuations #Quantum mechanics #Spectral index #Spectral line #Theoretical physics #Universe #astro-ph #hep-ph #hep-th
paper · pdf · doi:10.1103/physrevlett.92.251301
published as Phys.Rev.Lett.92:251301,2004 · 4 pages, Title has been modified, trivial changes to match accepted version in Phys. Rev. Lett
arxiv created 2004/05/16 · openalex publication_date 2004/06/24 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We bring together some known ingredients beyond the standard model physics that can explain the hot big bang model with the observed baryon asymmetry and also the fluctuations in the cosmic microwave background radiation with a minimal set of assumptions. We propose an interesting scenario where the inflaton energy density is dumped into an infinitely large extra dimension. Instead of the inflaton it is the right handed sneutrino condensate, which is acquiring a nonzero vacuum expectation value during inflation, whose fluctuations are responsible for the density perturbations seen in the cosmic microwave background radiation with a spectral index n(s) approximately 1. The decay of the condensate is explaining the reheating of the Universe with a temperature, T(rh)< or =10(9) GeV, and the baryon asymmetry of order one part in 10(10) with no baryon-isocurvature fluctuations.