Cosmic defects and cosmology

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dc.creatorMagueijo, Joao
dc.creatorBrandenberger, Robert
dc.date2000-02-01
dc.date.accessioned2026-07-07T01:52:03Z
dc.date.available2026-07-07T01:52:03Z
dc.descriptionWe provide a pedagogical overview of defect models of structure formation. We first introduce the concept of topological defect, and describe how to classify them. We then show how defects might be produced in phase transitions in the Early Universe and approach non-pathological scaling solutions. A very heuristic account of structure formation with defects is then provided, following which we introduce the tool box required for high precision calculations of CMB and LSS power spectra in these theories. The decomposition into scalar vector and tensor modes is reviewed, and then we introduce the concept of unequal-time correlator. We use isotropy and causality to constrain the form of these correlators. We finally show how these correlators may be decomposed into eigenmodes, thereby reducing a defect problem to a series of ``inflation'' problems. We conclude with a short description of results in these theories and how they fare against observations. We finally describe yet another application of topological defects in cosmology: baryogenesis.
dc.descriptionLecture notes of the International School on Cosmology, Kish Island, Iran, Jan. 22 - Feb. 4 1999, to be publ. in ``Large Scale Structure Formation'' (Kluwer, Dordrecht, 2000)
dc.identifierhttps://arxiv.org/abs/astro-ph/0002030
dc.identifierhttp://arxiv.org/abs/astro-ph/0002030
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/494
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.titleCosmic defects and cosmology
dc.typetext

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