Zoekresultaten

Zoekopdracht: faculteit: "FNWI" en publicatiejaar: "2004"

AuteurP Friedel
TitelCosmological Inflation and Quintessence
BegeleiderJ Smit
Jaar2004
Pagina's122
FaculteitFaculteit der Natuurwetenschappen, Wiskunde en Informatica
Instituut/afd.FNWI: Instituut voor Theoretische Fysica
TrefwoordenCosmology; Early universe; Cosmic Microwave Background Radiation
Basisclassificatie39.30
SamenvattingThe standard Hot Big Bang scenario of the evolution of the universe faces some problems which can be solved using the inflation concept. Inflation (accelerating expansion of the early universe) can be modelled by assuming that the energy density in the early universe is dominated by a quantum field, slowly rolling in its potential. At present, the universe is believed to be again in an accelerating phase. The smallness of this acceleration compared to naïve dimensional estimates rises the question as what the origin of the present acceleration may be (the quintessence problem). In this thesis some solutions for inflation and quintessence are discussed. Contrary to the inflationary case, the quintessence problem cannot be solved in a compelling way using a quantum field in a potential.
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