TOPOLOGICAL DEFECTS AND STRUCTURE FORMATION
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...
متن کاملTopological Defects and the Formation of Structure in the Universe
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.
متن کاملFormation, Interaction and Observation of Topological Defects
A number of talks at this school have been dedicated to the density of topological defects formed at a phase transition. Here, I will mostly be concerned with the distribution of defects formed at a phase transition. I will start with a description of the usual procedure to study the formation of defects (focussing on the case of strings), point out some shortcomings, and then move on to descri...
متن کاملCosmological Strucure Formation with Topological Defects
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...
متن کاملLocal Gauge Invariance and Formation of Topological Defects
In superconductors, and in other systems with a local U(1) gauge invariance, there are two mechanisms that form topological defects in phase transitions. In addition to the standard Kibble mechanism, thermal fluctuations of the magnetic field also lead to defect formation. This mechanism is specific to local gauge theories, predicts a qualitatively different spatial defect distribution and is t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Modern Physics A
سال: 1994
ISSN: 0217-751X,1793-656X
DOI: 10.1142/s0217751x9400090x