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The DESI Experiment Part I: Science,Targeting, and Survey Design
DESI (Dark Energy Spectroscopic Instrument) is a Stage IV ground-based dark energy experiment that will study baryon acoustic oscillations (BAO) and the growth of structure through redshift-space
f(T) gravity and local Lorentz invariance
We show that in theories of generalized teleparallel gravity, whose Lagrangians are algebraic functions of the usual teleparallel Lagrangian, the action and the field equations are not invariant
The DESI Experiment Part II: Instrument Design
DESI (Dark Energy Spectropic Instrument) is a Stage IV ground-based dark energy experiment that will study baryon acoustic oscillations and the growth of structure through redshift-space distortions
N-body simulations for f(R) gravity using a self-adaptive particle-mesh code.
We perform high resolution N-body simulations for f(R) gravity based on a self-adaptive particlemesh code MLAPM. The Chameleon mechanism that recovers General Relativity on small scales is fully
Unified description of screened modified gravity.
We consider modified gravity models driven by a scalar field whose effects are screened in high density regions due to the presence of nonlinearities in its interaction potential and/or its coupling
Testing gravity using cosmic voids
We explore voids in dark matter and halo fields from simulatio ns ofCDM and Hu-Sawicki f(R) models. In f(R) gravity, dark matter void abundances are greater than that of general relativity (GR).
Modeling halo mass functions in chameleon f(R) gravity
On cosmological scales, observations of the cluster abundance currently place the strongest constraints on f(R) gravity. These constraints lie in the large-field limit, where the modifications of
An extended excursion set approach to structure formation in chameleon models.
In attempts to explain dark energy, a number of models have been proposed in which the formation of a large-scale structure depends on the local environment. These models are highly non-linear and
Nonlinear structure formation in the cubic Galileon gravity model
We model the linear and nonlinear growth of large scale structure in the Cubic Galileon gravity model, by running a suite of N-body cosmological simulations using the ECOSMOG code. Our simulations
The non-linear matter and velocity power spectra in f(R) gravity
We study the matter and velocity divergence power spectra in a f(R) gravity theory and their time evolution measured from several large-volume N-body simulations with varying box sizes and
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