Stationary dark energy

• Verfasst von: Amendola, Luca [VerfasserIn]
• Verfasst von: Tocchini-Valentini, Domenico [VerfasserIn]
• Titel: Stationary dark energy
• Titelzusatz: the present universe as a global attractor
• Verf.angabe: Luca Amendola and Domenico Tocchini-Valentini, Osservatorio Astronomico di Roma, Viale del Parco Mellini 84, 00136 Roma, Italy
• Fussnoten: Gesehen am 17.11.2017
• Titel Quelle: Enthalten in: Physical review / D
• Jahr Quelle: 2001
• Band/Heft Quelle: 64(2001,4) Artikel-Nummer 043509, 5 Seiten
• ISSN Quelle: 1550-2368
• ISSN Quelle: 1089-4918
• DOI: doi:10.1103/PhysRevD.64.043509
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1565454766

Abstract

We propose a cosmological model that makes a significant step toward solving the coincidence problem of the near similarity at the present of the dark energy and dark matter components. Our cosmology has the following properties: (a) among flat and homogeneous spaces, the present universe is a global attractor; all the possible initial conditions lead to the observed proportion of dark energy and dark matter; once reached, it remains fixed forever; (b) the expansion is accelerated at the present; (c) the model is consistent with the large-scale structure and microwave background data; (d) the dark energy and the dark matter densities scale similarly after equivalence and are close to within one order of magnitude.