Hierarchy of N-point functions in the LCDM and ReBEL cosmologies

Abstract

In this work we investigate higher order statistics for the $\lcdm$ and ReBEL scalar-interacting dark matter models by analyzing $180\hmpc$ dark matter N-body simulation ensembles. The N-point correlation functions and the related hierarchical amplitudes, such as skewness and kurtosis, are computed using the Count-In-Cells method. Our studies demonstrate that the hierarchical amplitudes $S_n$ of the scalar-interacting dark matter model significantly deviate from the values in the $\lcdm$ cosmology on scales comparable and smaller then the screening length $r_s$ of a given scalar-interacting model. The corresponding additional forces that enhance the total attractive force exerted on dark matter particles at galaxy scales lowers the values of the hierarchical amplitudes $S_n$. We conclude that hypothetical additional exotic interactions in the dark matter sector should leave detectable markers in the higher-order correlation statistics of the density field. We focussed in detail on the redshift evolution of the dark matter field's skewness and kurtosis. From this investigation we find that the deviations from the canonical $\lcdm$ model introduced by the presence of the ``fifth'' force attain a maximum value at redshifts $0.5<z<2$. We therefore conclude that moderate redshift data are better suited for setting observational constraints on the investigated ReBEL models.

20 pages, 13 figures, accepted for publication in Phys. Rev. D, minor review, 1 new figure added, most of the figures replaced, main conclusions unchanged

References in corpus (10)

• Transients from Initial Conditions in Cosmological Simulations
• Clues from nearby galaxies to a better theory of cosmic evolution
• A New Force in the Dark Sector?
• New interactions in the dark sector mediated by dark energy
• Structure Formation by the Fifth Force III: Segregation of Baryons and Dark Matter
• Dark Matter Gravitational Clustering With a Long-Range Scalar Interaction
• Galaxy Satellites and the Weak Equivalence Principle
• Boosting hierarchical structure formation with scalar-interacting dark matter
• Transients from initial conditions based on Lagrangian perturbation theory in N-body simulations
• Simulations of structure formation in interacting dark energy cosmologies

Cited by in corpus (19)

• The darkness that shaped the void: dark energy and cosmic voids
• Structure Formation in the Symmetron Model
• The Zeldovich approximation: key to understanding Cosmic Web complexity
• Testing the theory of gravity with DESI: estimators, predictions and simulation requirements
• Cosmological simulations of screened modified gravity out of the static approximation: effects on matter distribution
• Testing the quasi-static approximation in $f(R)$ gravity simulations
• Hierarchical clustering in chameleon $f(R)$ gravity
• The view from the boundary: a new void stacking method
• On the Effects of Coupled Scalar Fields on Structure Formation
• Voids in Lyα Forest Tomographic Maps
• Revealing modified gravity signal in matter and halo hierarchical clustering
• DM haloes in the fifth-force cosmology
• Real- and redshift-space halo clustering in $f(R)$ cosmologies
• The VIMOS Public Extragalactic Redshift Survey (VIPERS). Hierarchical scaling and biasing
• Evolution of skewness and kurtosis of cosmic density fields
• Skewness as a probe of Baryon Acoustic Oscillations
• Bending the web: exploring the impact of modified gravity on the density field and halo properties within the cosmic web
• About One-point Statistics of the Ratio of Two Fourier-transformed Cosmic Fields and an Application
• Skewness as a Probe of Gravity: Real and Redshift Space Counts-In-Cells