relation: http://eprints.imtlucca.it/2905/
title: Nonlinear matter spectra in coupled quintessence
creator: Saracco, Fabio
creator: Pietroni, M.
creator: Tetradis, N.
creator: Pettorino, V.
creator: Robbers, G.
subject: QC Physics
description: We consider cosmologies in which a dark-energy scalar field interacts with cold dark matter. The growth of perturbations is followed beyond the linear level by means of the time-renormalization-group method, which is extended to describe a multicomponent matter sector. Even in the absence of the extra interaction, a scale-dependent bias is generated as a consequence of the different initial conditions for baryons and dark matter after decoupling. The effect is enhanced significantly by the extra coupling and can be at the 2%–3% level in the range of scales of baryonic acoustic oscillations. We compare our results with N-body simulations, finding very good agreement.
publisher: American Physical Society
date: 2010-07
type: Article
type: PeerReviewed
format: application/pdf
language: en
rights: cc_by_nc
identifier: http://eprints.imtlucca.it/2905/1/0911.5396v4.pdf
identifier:   Saracco, Fabio and Pietroni, M. and Tetradis, N. and Pettorino, V. and Robbers, G.  Nonlinear matter spectra in coupled quintessence.  Physical Review D, 82.  023528.  ISSN 1550-7998      (2010)  
relation: http://link.aps.org/doi/10.1103/PhysRevD.82.023528
relation: 10.1103/PhysRevD.82.023528