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Electroweak textures in the standard model and its supersymmetric extensions
2007 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The unification of the fundamental forces in nature, along with the big bang model, leads to the existence of cosmological phase transitions in the early universe. These transitions might have important implications for the further evolution of the universe. This MSc thesis in Space Engineering concerns the effects of nontrivial vacuum configurations called textures, which appear as a consequence of the spontaneous breakdown of the electroweak SU(2)*U(1) symmetry in the electroweak phase transition. The emphasis is on a special kind of texture called homilia texture, which consists of a network of homilia strings. These are stabilized by the boundary conditions imposed by the network. Among the studied effects of electroweak textures are baryon number violation and creation of primordial magnetic fields. No conclusion is at this stage possible regarding baryon number violation from homilia textures. More detailed study of the structure of the homilia network is required. A homilia texture is capable of producing a magnetic field of about B~E-41 G at 0.1 Mpc comoving scale today, but this is probably too small to have any important consequences. The work has been carried out at School of Physics, Faculty of Science, Clayton Campus, Monash University, Melbourne, under the supervision of A/Prof. Michael Morgan, School of Physics, Monash University.

Place, publisher, year, edition, pages
2007.
Keyword [en]
Physics Chemistry Maths, physics, particle physics, quantum field theory, textures, cosmology
Keyword [sv]
Fysik, Kemi, Matematik
Identifiers
URN: urn:nbn:se:ltu:diva-47851ISRN: LTU-EX--07/056--SELocal ID: 55a42a05-fd25-4705-9f7b-12916924280aOAI: oai:DiVA.org:ltu-47851DiVA: diva2:1021180
Subject / course
Student thesis, at least 30 credits
Educational program
Space Engineering, master's level
Examiners
Note
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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