English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

We study the impact of neutrino masses on the shape and height of the BAOpeak of the matter correlation function, both in real and redshift space. Inorder to describe the nonlinear evolution of the BAO peak we run N-bodysimulations and compare them with simple analytic formulae. We show that theevolution with redshift of the correlation function and its dependence on theneutrino masses is well reproduced in a simplified version of the Zel'dovichapproximation, in which the mode-coupling contribution to the power spectrum isneglected. While in linear theory the BAO peak decreases for increasingneutrino masses, the effect of nonlinear structure formation goes in theopposite direction, since the peak broadening by large scale flows is lesseffective. As a result of this combined effect, the peak decreases by $\sim 0.6\%$ for $ \sum m_\nu = 0.15$ eV and increases by $\sim1.2 \%$ for $ \sum m_\nu= 0.3$ eV, with respect to a massless neutrino cosmology with equal value ofthe other cosmological parameters. We extend our analysis to redshift space andto halos, and confirm the agreement between simulations and the analyticformulae. We argue that all analytical approaches having the Zel'dovichpropagator in their lowest order approximation should give comparableperformances, irrespectively to their formulation in Lagrangian or in Eulerianspace.

The effect of massive neutrinos on the BAO peak