Cosmic structure formation with topological defects
نویسندگان
چکیده
منابع مشابه
Topological 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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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.
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Structure formation with topological defects is described. The main differences from inflationary models are highlighted. The results are compared with recent observations. It is concluded that all the defect models studied so far are in disagreement with recent observations of CMB anisotropies. Furthermore, present observations do not support ’decoherence’, a generic feature of structure forma...
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Topological defects, in particular cosmic strings, give rise to an interesting mechanism for generating the primordial perturbations in the early Universe which are required to explain the present structure. An overview of the cosmic string model will be given, focusing on the predictions of the theory for the large-scale structure of the Universe and for cosmic microwave background anisotropies.
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ژورنال
عنوان ژورنال: Physics Reports
سال: 2002
ISSN: 0370-1573
DOI: 10.1016/s0370-1573(02)00014-5