# Cosmic Degeneracies I: Joint N-body Simulations of Modified Gravity and Massive Neutrinos

@article{Baldi2013CosmicDI, title={Cosmic Degeneracies I: Joint N-body Simulations of Modified Gravity and Massive Neutrinos}, author={Marco Baldi and Francisco Villaescusa-Navarro and Matteo Viel and Ewald Puchwein and Volker Springel and Lauro Moscardini}, journal={Monthly Notices of the Royal Astronomical Society}, year={2013}, volume={440}, pages={75-88} }

We present the first suite of cosmological N-body simulation s that simultaneously include the effects of two different and theoretically indepe ndent extensions of the standard �CDM cosmological scenario ‐ namely an f(R) theory of Modified Gravity (MG) and a cosmological background of massive neutrinos ‐ with the aim to investigate their possible observational degeneracies. We focus on three basic statistics of the large-scale matter distribution, more specifically the nonlinear matter power…

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## References

SHOWING 1-10 OF 88 REFERENCES

### Non-linear evolution of the cosmic neutrino background

- Physics
- 2013

We investigate the non-linear evolution of the relic cosmic neutrino background by running large box-size, high resolution N-body simulations which incorporate cold dark matter (CDM) and neutrinos as…

### Neutrinos in non-linear structure formation — the effect on halo properties

- Physics
- 2010

We use N-body simulations to find the effect of neutrino masses on halo properties, and investigate how the density profiles of both the neutrino and the dark matter components change as a function…

### The impact of massive neutrinos on the abundance of massive clusters

- Physics
- 2012

We study the spherical, top-hat collapse model for a mixed dark matter model including cold dark matter (CDM) and massive neutrinos of mass scales ranging from m_nu= 0.05 to a few 0.1eV, the range of…

### Cosmology with massive neutrinos II: on the universality of the halo mass function and bias

- Physics
- 2013

We use a large suite of N-body simulations to study departures from universality in halo abundances and clustering in cosmologies with non-vanishing neutrino masses. To this end, we study how the…

### Cosmology with massive neutrinos III: the halo mass function and an application to galaxy clusters

- Physics
- 2013

We use a suite of N-body simulations that incorporate massive neutrinos as an extra-set of particles to investigate their effect on the halo mass function. We show that for cosmologies with massive…

### Cosmology with massive neutrinos I: towards a realistic modeling of the relation between matter, haloes and galaxies

- Physics
- 2013

By using a suite of large box-size N-body simulations that incorporate massive neutrinos as an extra set of particles, with total masses of 0.15, 0.30, and 0.60 eV, we investigate the impact of…

### Nonlinear evolution of f ( R ) cosmologies. III. Halo statistics

- Physics
- 2009

The statistical properties of dark matter halos, the building blocks of cosmological observables associated with structure in the Universe, offer many opportunities to test models for cosmic…

### SIMULTANEOUS CONSTRAINTS ON THE NUMBER AND MASS OF RELATIVISTIC SPECIES

- Physics
- 2013

Recent indications from both particle physics and cosmology suggest the possible existence of more than three neutrino species. In cosmological analyses the effects of neutrino mass and number of…

### Constraints on Neutrino Mass and Light Degrees of Freedom in Extended Cosmological Parameter Spaces

- Physics
- 2013

From a combination of probes including the cosmic microwave background (WMAP7+SPT), Hubble constant (HST), baryon acoustic oscillations (SDSS+2dFGRS), and supernova distances (Union2), we have…