Relativistic N-body simulations with massive neutrinos

Abstract

Some of the dark matter in the Universe is made up of massive neutrinos. Their impact on the formation of large scale structure can be used to determine their absolute mass scale from cosmology, but to this end accurate numerical simulations have to be developed. Due to their relativistic nature, neutrinos pose additional challenges when one tries to include them in N-body simulations that are traditionally based on Newtonian physics. Here we present the first numerical study of massive neutrinos that uses a fully relativistic approach. Our N-body code, gevolution, is based on a weak-field formulation of general relativity that naturally provides a self-consistent framework for relativistic particle species. This allows us to model neutrinos from first principles, without invoking any ad-hoc recipes. Our simulation suite comprises some of the largest neutrino simulations performed to date. We study the effect of massive neutrinos on the nonlinear power spectra and the halo mass function, focusing on the interesting mass range between 0.06 eV and 0.3 eV and including a case for an inverted mass hierarchy.

26 pages + appendix, 17 figures; v2: minor revision, published version; code available at https://github.com/gevolution-code/gevolution-1.1

References in corpus (13)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• The Reactor Antineutrino Anomaly
• Massive neutrinos and cosmology
• Gravitational Wave Spectrum Induced by Primordial Scalar Perturbations
• The Mira-Titan Universe II: Matter Power Spectrum Emulation
• Constraint on neutrino masses from SDSS-III/BOSS Ly$\alpha$ forest and other cosmological probes
• Simulating nonlinear cosmological structure formation with massive neutrinos
• N-body methods for relativistic cosmology
• Precision reconstruction of the dark matter-neutrino relative velocity from N-body simulations
• Cosmological $N$-body simulations including radiation perturbations
• Models of the Cosmological 21 cm Signal from the Epoch of Reionization Calibrated with Lyman-alpha and CMB Data
• Baryonic acoustic oscillations simulations for the Large Synoptic Survey Telescope (LSST)

Cited by in corpus (44)

• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• Large-scale dark matter simulations
• Euclid preparation: IX. EuclidEmulator2 -- Power spectrum emulation with massive neutrinos and self-consistent dark energy perturbations
• Constraining $M_{\nu }$ with the Bispectrum II: The Total Information Content of the Galaxy Bispectrum
• Detecting Neutrino Mass by Combining Matter Clustering, Halos, and Voids
• An optimal nonlinear method for simulating relic neutrinos
• A double take on early and interacting dark energy from JWST
• Reconstruction of the neutrino mass as a function of redshift
• A fast particle-mesh simulation of non-linear cosmological structure formation with massive neutrinos
• Weak-lensing observables in relativistic N-body simulations
• Beware of Fake $\nu$s: The Effect of Massive Neutrinos on the Nonlinear Evolution of Cosmic Structure
• Higher-order initial conditions with massive neutrinos
• Euclid: Modelling massive neutrinos in cosmology -- a code comparison
• $\text{Hi-COLA}$: Fast, approximate simulations of structure formation in Horndeski gravity
• One line to run them all: SuperEasy massive neutrino linear response in $N$-body simulations
• Fast simulations of cosmic large-scale structure with massive neutrinos
• Simulation techniques for modified gravity
• Clustering dark energy imprints on cosmological observables of the gravitational field
• The void-galaxy cross-correlation function with massive neutrinos and modified gravity
• Numerical solutions to Einstein's equations in a shearing-dust Universe: a code comparison
• Measuring anisotropic stress with relativistic effects
• Combining gravitational lensing and gravitational redshift to measure the anisotropic stress with future galaxy surveys
• Geodesic motion and phase-space evolution of massive neutrinos
• Sesame: A power spectrum emulator pipeline for beyond-$\Lambda$CDM models
• Relativistic bias in neutrino cosmologies
• asevolution: a relativistic N-body implementation of the (a)symmetron
• Relativistic Corrections to the Growth of Structure in Modified Gravity
• Neutrino winds on the sky
• A Minimal Model for Massive Neutrinos in Newtonian N-body Simulations
• Improving initialization and evolution accuracy of cosmological neutrino simulations
• Hybrid multi-fluid-particle simulations of the cosmic neutrino background
• A solution to the S8 tension through neutrino-dark matter interactions
• Neutrinos in N-body simulations
• A new instability in clustering dark energy?
• Measuring neutrino mass and asymmetry with matter pairwise velocities
• GrGadget: an N-body TreePM relativistic code for cosmological simulations
• Nonlinear Matter Power Spectrum from relativistic $N$-body Simulations: ${\Lambda }_{\mathrm{s}}$CDM versus $\Lambda$CDM
• One-point Statistics in various cosmic environments in the presence of massive neutrinos
• Clustering of dark matter in the cosmic web as a probe of massive neutrinos
• Mapping the cosmic mass distribution with stacked weak gravitational lensing and Doppler lensing
• Cosmic velocity, density and halo mass function: Insights from deep learning
• Perturbative and numerical study of nonlinear relativistic effects in weak lensing
• Large scale structures: from inflation to today: a brief report
• Slow neutrinos: non-linearity and momentum-space emulation