Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-01-14
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, 1 figure invited talk at the Workshop on CPT and Lorentz Symmetry, Bloomington, Indiana, Nov. 6 - 8 1998, to be publ
Scientific paper
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.
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