Screened fifth forces in parity-breaking correlation functions

Abstract

Cross-correlating two different types of galaxy gives rise to parity breaking in the correlation function that derives from differences in the galaxies' properties and environments. This is typically associated with a difference in galaxy bias, describing the relation between galaxy number density and dark matter density, although observational effects such as magnification bias also play a role. In this paper we show that the presence of a screened fifth force adds additional degrees of freedom to the correlation function, describing the effective coupling of the force to the two galaxy populations. These are also properties of the galaxies' environments, but with different dependence in general to galaxy bias. We derive the parity-breaking correlation function analytically as a function of fifth-force strength and the two populations' fifth-force charges, and explore the result numerically using Hu-Sawicki $f(R)$ as a toy model of chameleon screening. We find that screening gives rise to an octopole, which, in the absence of magnification bias, is not present in any gravity theory without screening and thus is a qualitatively distinct signature. The modification to the dipole and octopole can be $\mathcal{O}(10\%)$ and $\mathcal{O}(100\%)$ respectively at redshift $z\gtrsim 0.5$ due to screening, but decreases towards lower redshift. The change in the background power spectrum in $f(R)$ theories induces a change in the dipole of roughly the same size, but dominant to the effect of screening at low $z$. While current data is insufficient to measure the parity-breaking dipole or octopole to the precision required to test these models, future surveys such as DESI, Euclid and SKA have the potential to probe screened fifth forces through the dipole.

arXiv commentMatches published version

References in corpus (70)

• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
• Efficient Computation of CMB anisotropies in closed FRW models
• Modified Gravity and Cosmology
• LSST: from Science Drivers to Reference Design and Anticipated Data Products
• Large scale bias and the peak background split
• Ellipsoidal collapse and an improved model for the number and spatial distribution of dark matter haloes
• Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
• Chameleon Cosmology
• The DESI Experiment Part I: Science,Targeting, and Survey Design
• Beyond the Cosmological Standard Model
• Cosmology and Fundamental Physics with the Euclid Satellite
• Halo occupation numbers and galaxy bias
• Tests of the Gravitational Inverse-Square Law
• Symmetron Fields: Screening Long-Range Forces Through Local Symmetry Restoration
• The age dependence of halo clustering
• The Dependence of Halo Clustering on Halo Formation History, Concentration, and Occupation
• The linear power spectrum of observed source number counts
• The Effective Field Theory of Dark Energy
• What galaxy surveys really measure
• Maximal freedom at minimum cost: linear large-scale structure in general modifications of gravity
• New Perspective on Galaxy Clustering as a Cosmological Probe: General Relativistic Effects
• Cosmological Tests of Gravity
• k-Mouflage gravity
• Non-linear Evolution of f(R) Cosmologies III: Halo Statistics
• ECOSMOG: An Efficient Code for Simulating Modified Gravity
• Equivalence Principle Implications of Modified Gravity Models
• A Unified Description of Screened Modified Gravity
• The time-evolution of bias
• N-body Simulations for f(R) Gravity using a Self-adaptive Particle-Mesh Code
• Astrophysical Tests of Modified Gravity: Constraints from Distance Indicators in the Nearby Universe
• Modified Gravity-GADGET: A new code for cosmological hydrodynamical simulations of modified gravity models
• hi_class: Horndeski in the Cosmic Linear Anisotropy Solving System
• On the Prediction of Velocity Fields from Redshift Space Galaxy Samples
• Modified Gravity N-body Code Comparison Project
• Testing General Relativity on Horizon Scales and the Primordial non-Gaussianity
• Going beyond the Kaiser redshift-space distortion formula: a full general relativistic account of the effects and their detectability in galaxy clustering
• The nonlinear matter and velocity power spectra in f(R) gravity
• Beyond Assembly Bias: Exploring Secondary Halo Biases for Cluster-size Haloes
• Asymmetric galaxy correlation functions
• A Compendium of Chameleon Constraints
• Constraining chameleon models with cosmology
• Gravitational redshift and other redshift-space distortions of the imaginary part of the power spectrum
• Measurement of the dipole in the cross-correlation function of galaxies
• Chameleon Field Theories
• Measuring the lensing potential with tomographic galaxy number counts
• Scaling relations and mass bias in hydrodynamical f(R) gravity simulations of galaxy clusters
• Tests of Modified Gravity with Dwarf Galaxies
• Cosmic Web and Environmental Dependence of Screening: Vainshtein vs. Chameleon
• Testing the equivalence principle on cosmological scales
• Astrophysical Tests of Modified Gravity: the Morphology and Kinematics of Dwarf Galaxies
• Astrophysical Tests of Modified Gravity: Stellar and Gaseous Rotation Curves in Dwarf Galaxies
• Testing the quasi-static approximation in $f(R)$ gravity simulations
• Realistic simulations of galaxy formation in f(R) modified gravity
• Probing gravity with a joint analysis of galaxy and CMB lensing and SDSS spectroscopy
• Gravitational redshifts from large-scale structure
• Measuring cosmic velocities with 21cm intensity mapping and galaxy redshift survey cross-correlation dipoles
• Reconstructing the gravitational field of the local universe
• Relativistic distortions in the large-scale clustering of SDSS-III BOSS CMASS galaxies
• The modified gravity lightcone simulation project I: Statistics of matter and halo distributions
• Gravitational Redshift of Galaxies in Clusters from the Sloan Digital Sky Survey and the Baryon Oscillation Spectroscopic Survey
• The Correlated Formation Histories of Massive Galaxies and Their Dark Matter Halos
• The Fifth Force in the Local Cosmic Web
• Fifth force constraints from the separation of galaxy mass components
• Halo Scale Predictions of Symmetron Modified Gravity
• Fifth force constraints from galaxy warps
• Real- and redshift-space halo clustering in $f(R)$ cosmologies
• Lensing corrections to the $E_g(z)$ statistics from large scale structure
• Anisotropic Extinction Distortion of the Galaxy Correlation Function
• Relativistic Effects on Galaxy Redshift Samples due to Target Selection
• Relativistic asymmetries in the galaxy cross-correlation function

Cited by in corpus (6)

• The Novel Probes Project -- Tests of Gravity on Astrophysical Scales
• Testing Screened Modified Gravity
• A null test of the equivalence principle using relativistic effects in galaxy surveys
• Testing local position invariance with odd multipoles of galaxy clustering statistics
• Origin & evolution of the Universe
• Skewness as a Probe of Gravity: Real and Redshift Space Counts-In-Cells