Signals of primordial phase transitions on CMB maps

• Verfasst von: Corasaniti, Pier Stefano [VerfasserIn]
• Verfasst von: Amendola, Luca [VerfasserIn]
• Verfasst von: Occhionero, Franco [VerfasserIn]
• Titel: Signals of primordial phase transitions on CMB maps
• Verf.angabe: P.S. Corasaniti, L. Amendola, F. Occhionero
• Fussnoten: Gesehen am 17.11.2017
• Titel Quelle: Enthalten in: De.arxiv.org
• Jahr Quelle: 2001
• Band/Heft Quelle: (2001) Artikel-Nummer 0103173, 2 Seiten
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 156545197X

Abstract

The analysis of the CMB anisotropies is a rich source of cosmological informations. In our study, we simulated the signals produced by the relics of a first order phase transition occured during an inflationary epoch in the early Universe. These relics are bubbles of true vacuum that leave a characteristic non-Gaussian imprint on the CMB. We use different statistical estimators in order to evaluate this non-Gaussianity. We obtain some limits on the allowed values of the bubble parameters comparing our results with the experimental data. We also predict the possibility to detect this signal with the next high resolution experiments.