Dark energy and the Boomerang data

• Verfasst von: Amendola, Luca [VerfasserIn]
• Titel: Dark energy and the Boomerang data
• Verf.angabe: Luca Amendola, Osservatorio Astronomico di Roma, Viale del Parco Mellini 84, 00136 Roma, Italy
• Fussnoten: Gesehen am 17.11.2017
• Titel Quelle: Enthalten in: De.arxiv.org
• Jahr Quelle: 2000
• Band/Heft Quelle: (2000) Artikel-Nummer 0006300, 7 Seiten
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1565457625

Abstract

The recent high-quality Boomerang data allow to test many competing cosmological models. Here I present a seven-parameter likelihood analysis of dark energy models with exponential potential and explicit coupling to dark matter. Such a model is conformally equivalent to a scalar field with non-minimal coupling to gravity. So far, the constraints on a dark energy - dark matter coupling were extremely weak. The Boomerang data constrain the dimensionless coupling $\beta $ to be smaller than 0.1, an order of magnitude better than previous limits. In terms of the constant $\xi $ of non-minimally coupled theories, this amounts to $\xi <0.01.$ On the other hand, Boomerang has not enough sensitivity to put constraints on the potential slope.