Clustering and redshift-space distortions in modified gravity models with massive neutrinos. (arXiv:1903.00154v2 [astro-ph.CO] UPDATED)
<a href="http://arxiv.org/find/astro-ph/1/au:+Garcia_Farieta_J/0/1/0/all/0/1">Jorge Enrique García-Farieta</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Marulli_F/0/1/0/all/0/1">Federico Marulli</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Veropalumbo_A/0/1/0/all/0/1">Alfonso Veropalumbo</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Moscardini_L/0/1/0/all/0/1">Lauro Moscardini</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Casas_R/0/1/0/all/0/1">Rigoberto Casas</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Giocoli_C/0/1/0/all/0/1">Carlo Giocoli</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Baldi_M/0/1/0/all/0/1">Marco Baldi</a>
Modified gravity and massive neutrino cosmologies are two of the most
interesting scenarios that have been recently explored to account for possible
observational deviations from the concordance $Lambda$-cold dark matter
($Lambda$CDM) model. In this context, we investigated the large-scale
structure of the Universe by exploiting the dustp simulations that implement,
simultaneously, the effects of $f(R)$ gravity and massive neutrinos. To study
the possibility of breaking the degeneracy between these two effects, we
analysed the redshift-space distortions in the clustering of dark matter haloes
at different redshifts. Specifically, we focused on the monopole and quadrupole
of the two-point correlation function, both in real and redshift space. The
deviations with respect to $Lambda$CDM model have been quantified in terms of
the linear growth rate parameter. We found that redshift-space distortions
provide a powerful probe to discriminate between $Lambda$CDM and modified
gravity models, especially at high redshifts ($z gtrsim 1$), even in the
presence of massive neutrinos.
Modified gravity and massive neutrino cosmologies are two of the most
interesting scenarios that have been recently explored to account for possible
observational deviations from the concordance $Lambda$-cold dark matter
($Lambda$CDM) model. In this context, we investigated the large-scale
structure of the Universe by exploiting the dustp simulations that implement,
simultaneously, the effects of $f(R)$ gravity and massive neutrinos. To study
the possibility of breaking the degeneracy between these two effects, we
analysed the redshift-space distortions in the clustering of dark matter haloes
at different redshifts. Specifically, we focused on the monopole and quadrupole
of the two-point correlation function, both in real and redshift space. The
deviations with respect to $Lambda$CDM model have been quantified in terms of
the linear growth rate parameter. We found that redshift-space distortions
provide a powerful probe to discriminate between $Lambda$CDM and modified
gravity models, especially at high redshifts ($z gtrsim 1$), even in the
presence of massive neutrinos.
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