Tesi etd-01042008-125630 |
Link copiato negli appunti
Tipo di tesi
Tesi di laurea specialistica
Autore
PETRI, GIOVANNI
URN
etd-01042008-125630
Titolo
On Non-Gaussianity of the Cosmological Perturbation
Dipartimento
SCIENZE MATEMATICHE, FISICHE E NATURALI
Corso di studi
SCIENZE FISICHE
Relatori
Relatore Riotto, Antonio
Relatore Grasso, Dario
Relatore Grasso, Dario
Parole chiave
- pertubazione
- inflazione
- curvatura
- cosmologia
Data inizio appello
21/01/2008
Consultabilità
Completa
Riassunto
The primordial curvature perturbation (ζ), generated during or at the end of Inflation,
is the seed of present structures. Non Gaussianity in ζ is an efficient tool to
discriminate among the different theoretical mechanisms which are thought to be
generating ζ. We study the effects of including high order loop corrections of a λφ^4
massless scalar field theory during a de Sitter stage in the prediction of non
Gaussianity in the trispectrum, i.e.the 4-point correlation function.
is the seed of present structures. Non Gaussianity in ζ is an efficient tool to
discriminate among the different theoretical mechanisms which are thought to be
generating ζ. We study the effects of including high order loop corrections of a λφ^4
massless scalar field theory during a de Sitter stage in the prediction of non
Gaussianity in the trispectrum, i.e.the 4-point correlation function.
File
| Nome file | Dimensione |
|---|---|
| TesiFinale.pdf | 1.68 Mb |
Contatta l’autore |
|