2001/09/30 by Juan Garcia-Bellido, J. García-Bellido, E. Ruiz Morales +1 · 1 citation
Physics and Astronomy · #Asymmetry #Baryon asymmetry #Black Holes and Theoretical Physics #Boson #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Inflation (cosmology) #Leptogenesis #Lepton #Particle physics #Physics #Quantum mechanics #Spontaneous symmetry breaking #Symmetry breaking #Theoretical physics #hep-ph
paper · pdf · doi:10.1016/s0370-2693(02)01820-8
published as Phys.Lett. B536 (2002) 193-202 · 17 pages, 2 figures. Significantly enlarged version, including a more detailed discussion of leptogenesis. To appear in Physics Letters B
arxiv created 2002/04/22 · openalex publication_date 2002/06/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Recent studies suggest that the process of symmetry breaking after inflation typically occurs very fast, within a single oscillation of the symmetry-breaking field, due to the spinodal growth of its long-wave modes, otherwise known as `tachyonic preheating'. We show how this sudden transition from the false to the true vacuum can induce a significant production of particles, bosons and fermions, coupled to the symmetry-breaking field. We find that this new mechanism of particle production in the early Universe may have interesting consequences for the origin of supermassive dark matter and the generation of the observed baryon asymmetry through leptogenesis.