1999/01/14 by Robert Brandenberger, Robert H. Brandenberger, Brandenberger, Robert H.
Physics and Astronomy · #Astrophysics (astro-ph) #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #Particle physics theoretical and experimental studies #astro-ph #hep-ph #hep-th
paper · pdf · doi:10.48550/arxiv.hep-ph/9901303
12 pages, 1 figure invited talk at the Workshop on CPT and Lorentz Symmetry, Bloomington, Indiana, Nov. 6 - 8 1998, to be publ. in the proceedings (World Scientific, Singapore, 1999)
arxiv created 1999/01/14 · openalex publication_date 1999/01/14 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The asymmetry between matter and antimatter in the Universe indicates that there was a period in the very early Universe when the CPT symmetry was broken. The conservative interpretation is that the breaking was dynamical, induced by the distinguished direction of time stemming from the cosmological expansion. Here, I review the role which topological defect networks may play in baryogenesis and how this relates to dynamical CPT symmetry breaking. Particular attention is placed on defect-mediated electroweak baryogenesis. A recent suggestion of defect-mediated QCD scale baryogenesis is also mentioned.