منابع مشابه
Topological Defects and Cosmology
Many particle physics models of matter admit solutions corresponding to stable or long-lived topological defects. In the context of standard cosmology it is then unavoidable that such defects will form during phase transitions in the very early Universe. Certain types of defects lead to disastrous consequences for cosmology, others may play a useful role, as possible seeds for the formation of ...
متن کاملConserved Topological Defects in Non-Embedded Graphs in Quantum Gravity
We follow up on previous work which found that commonly used graph evolution moves lead to conserved quantities that can be expressed in terms of the braiding of the graph in its embedding space. We study non-embedded graphs under three distinct sets of dynamical rules and find non-trivial conserved quantities that can be expressed in terms of topological defects in the dual geometry. For graph...
متن کاملTopological defects and open inflation
Alexander Vilenkin Institute of Cosmology, Department of Physics and Astronomy, Tufts University, Medford, MA 02155, USA Topological defects can naturally be formed soon after bubble nucleation in the open inflation scenario. The defects are not completely diluted away by the subsequent period of inflation in the bubble interior and can produce observable large-scale microwave background anisot...
متن کاملCosmic Strings and Topological Defects
In this review article, we point out spontaneous symmetry breaking is closely related to the emergence of the topological defects. Basic definitions and dynamics of the domain walls are introduced in the second section. Finally, we worked out an example of the spherical domain wall by using semi-classical approach.
متن کاملTopological Defects and Structure Formation ⋆
Topological defects are produced during phase transitions in the very early Universe. They arise in most unified theories of strong, weak and electromagnetic interactions. These lectures focus on the role of topological defects in cosmology, with particular emphasis on the models of structure formation based on defects. The role of topological defects in baryogenesis is also reviewed. ⋆ Based o...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics Supplement
سال: 1984
ISSN: 0375-9687
DOI: 10.1143/ptps.79.161