Linear and non-linear perturbations in dark energy models

• Verfasst von: Amendola, Luca [VerfasserIn]
• Titel: Linear and non-linear perturbations in dark energy models
• Verf.angabe: Luca Amendola, INAF/Osservatorio Astronomico di Roma, Viale Frascati 33, 00040 Monte Porzio Catone (Roma), Italy
• Fussnoten: Gesehen am 17.11.2017
• Titel Quelle: Enthalten in: De.arxiv.org
• Jahr Quelle: 2003
• Band/Heft Quelle: (2003) Artikel-Nummer 0311175, 12 Seiten
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1565448472

Abstract

I review the linear and second-order perturbation theory in dark energy models with explicit interaction to matter in view of applications to N-body simulations and non-linear phenomena. Several new or generalized results are obtained: the general equations for the linear perturbation growth; an analytical expression for the bias induced by a species-dependent interaction; the Yukawa correction to the gravitational potential due to dark energy interaction; the second-order perturbation equations in coupled dark energy and their Newtonian limit. I also show that a density-dependent effective dark energy mass arises if the dark energy coupling is varying.