EFTCAMB/EFTCosmoMC: massive neutrinos in dark cosmologies

Abstract

We revisit the degeneracy between massive neutrinos and generalized theories of gravity in the framework of effective field theory of cosmic acceleration. In particular we consider f(R) theories and a class of non-minimally coupled models parametrized via a coupling to gravity which is linear in the scale factor. In the former case, we find a slightly lower degeneracy with respect to what found so far in the literature, due to the fact that we implement exact designer f(R) models and evolve the full linear dynamics of perturbations. As a consequence, our bounds are slightly tighter on the f(R) parameter but looser on the summed neutrino mass. We also set a new upper bound on the Compton wavelength parameter ${\mathrm{Log}}_{10}{B}_0<-4.1$ at 95% C.L. with fixed summed neutrino mass ($\sum m_{\nu }=0.06$ eV) in f(R) gravity with the combined data sets from cosmic microwave background temperature and lensing power spectra of Planck collaboration as well as galaxy power spectrum from WiggleZ dark energy survey. We do not observe a sizable degeneracy between massive neutrinos and modified gravity in the linear parametrization of non-minimally gravitational coupling model. The analysis is performed with an updated version of the EFTCAMB/EFTCosmoMC package, which is now publicly available and extends the first version of the code with the consistent inclusion of massive neutrinos, tensor modes, several alternative background histories and designer quintessence models.

9 pages, 3 figures. Typing error fixed in a plot. The EFTCAMB/EFTCosmoMC codes are available at: http://wwwhome.lorentz.leidenuniv.nl/~hu/codes/

References in corpus (12)

• Disappearing cosmological constant in f(R) gravity
• Massive neutrinos and cosmology
• The Large Scale Structure of f(R) Gravity
• WMAP constraints on low redshift evolution of dark energy
• Approaches to Understanding Cosmic Acceleration
• Distinguishing Modified Gravity from Dark Energy
• Searching for modified growth patterns with tomographic surveys
• Testing gravity with CAMB and CosmoMC
• Current constraints on the cosmic growth history
• Effective Field Theory of Cosmic Acceleration: constraining dark energy with CMB data
• Cosmology Based on f(R) Gravity Admits 1 eV Sterile Neutrinos
• Practical solutions for perturbed f(R) gravity

Cited by in corpus (9)

• A comparison of Einstein-Boltzmann solvers for testing General Relativity
• Traversable wormhole models in $f(R)$ gravity
• On cosmological signatures of baryons-dark energy elastic couplings
• On the stability conditions for theories of modified gravity in presence of matter fields
• Can modified gravity models reconcile the tension between CMB anisotropy and lensing maps in Planck-like observations?
• Cosmology-marginalized approaches in Bayesian model comparison: the neutrino mass as a case study
• Constraining f(R) Gravity with Planck Sunyaev-Zel'dovich Clusters
• Neutrino masses from large-scale structures: future sensitivity and theory dependence
• Cosmology based on $f(R)$ gravity with $\mathcal{O}(1)$ eV sterile neutrino