44 citations · 197 across the 12 of their papers we have counts for
13 papers
An emulation-based model for the projected correlation function
Vetle A. Vikenes, Cheng-Zong Ruan, David F. Mota
Data from the ongoing \textit{Euclid} survey will map out billions of galaxies in the Universe, covering more than a third of the sky. This data will provide a wealth of informatio…
Matter Power Spectra in Modified Gravity: A Comparative Study of Approximations and -Body Simulations
Benjamin Bose, Ashim Sen Gupta, Bartolomeo Fiorini +9
Testing gravity and the concordance model of cosmology, CDM, at large scales is a key goal of this decade's largest galaxy surveys. Here we present a comparative study of dark m…
fkPT: Constraining scale-dependent modified gravity with the full-shape galaxy power spectrum
Mario A. Rodriguez-Meza, Alejandro Aviles, Hernan E. Noriega +4
Modified gravity models with scale-dependent linear growth typically exhibit an enhancement in the power spectrum beyond a certain scale. The conventional methods for extracting co…
An implementation of nDGP gravity in Pinocchio
Yanling Song, Bin Hu, Chengzong Ruan +2
In this paper we investigate dark matter structure formation in the normal branch of the Dvali-Gabadadze-Porrati (nDGP) model using the PINOCCHIO algorithm. We first present 2nd or…
Sesame: A power spectrum emulator pipeline for beyond-CDM models
Renate Mauland, Hans A. Winther, Cheng-Zong Ruan
The mysterious nature of the dark sector of the CDM model is one of the main motivators behind the study of alternative cosmological models. A central quantity of interest for t…
An emulator-based halo model in modified gravity -- I. The halo concentration-mass relation and density profile
Cheng-Zong Ruan, Carolina Cuesta-Lazaro, Alexander Eggemeier +7
In this series of papers we present an emulator-based halo model for the non-linear clustering of galaxies in modified gravity cosmologies. In the first paper, we present emulators…
Galaxy clustering from the bottom up: A Streaming Model emulator I
Carolina Cuesta-Lazaro, Takahiro Nishimichi, Yosuke Kobayashi +9
In this series of papers, we present a simulation-based model for the non-linear clustering of galaxies based on separate modelling of clustering in real space and velocity statist…
Towards an accurate model of small-scale redshift-space distortions in modified gravity
Cheng-Zong Ruan, Carolina Cuesta-Lazaro, Alexander Eggemeier +4
The coming generation of galaxy surveys will provide measurements of galaxy clustering with unprecedented accuracy and data size, which will allow us to test cosmological models at…
Fast full -body simulations of generic modified gravity: derivative coupling models
César Hernández-Aguayo, Cheng-Zong Ruan, Baojiu Li +4
We present MG-GLAM, a code developed for the very fast production of full -body cosmological simulations in modified gravity (MG) models. We describe the implementation, numeric…
Fast full N-body simulations of generic modified gravity: conformal coupling models
Cheng-Zong Ruan, César Hernández-Aguayo, Baojiu Li +4
We present MG-GLAM, a code developed for the very fast production of full -body cosmological simulations in modified gravity (MG) models. We describe the implementation, numeric…
Non-linear matter power spectrum without screening dynamics modelling in gravity
Cheng-Zong Ruan, Tong-Jie Zhang, Bin Hu
Halo model is a physically intuitive method for modelling the non-linear power spectrum, especially for the alternatives to the standard CDM models. In this paper, we exam the S…
Using spatial curvature with HII galaxies and cosmic chronometers to explore the tension in
Cheng-Zong Ruan, Fulvio Melia, Yu Chen +1
We present a model-independent measurement of spatial curvature in the Friedmann-Lemaître-Robertson-Walker (FLRW) universe, based on observations of the Hubble parameter $H…
Model-independent Test of the Cosmic Distance Duality Relation
Cheng-Zong Ruan, Fulvio Melia, Tong-Jie Zhang
A validation of the cosmic distance duality (CDD) relation, eta(z)=(1+z)^2 d_A(z)/d_L(z)=1, coupling the luminosity (d_L) and angular-diameter (d_A) distances, is crucial because i…