Linear and nonlinear perturbations in dark energy models

• Verfasst von: Amendola, Luca [VerfasserIn]
• Titel: Linear and nonlinear 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: Physical review / D
• Jahr Quelle: 2004
• Band/Heft Quelle: 69(2004,10) Artikel-Nummer 103524, 10 Seiten
• ISSN Quelle: 1550-2368
• ISSN Quelle: 1089-4918
• DOI: doi:10.1103/PhysRevD.69.103524
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 156544843X

Abstract

I present linear and second-order perturbation theory in dark energy models with an explicit interaction to matter in view of its application to N-body simulations and nonlinear 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, and 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.