N-body simulations for f(R) gravity using a self-adaptive particle-mesh code.

By Gong-Bo Zhao, Baojiu Li, K. Koyama. 2010

174 citations recorded by the source corpus.

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 taken into account by self-consistently solving the non-linear equation for the scalar field. We independently confirm the previous simulation results, including the matter power spectrum, halo mass function and density profiles, obtained by Oyaizu et al. (Phys.Rev.D 78, 123524, 2008) and Schmidt et al. (Phys.Rev.D 79, 083518, 2009), and extend the resolution up to k � 20 h/Mpc for the measurement of the matter power spectrum. Based on our simulation results, we discuss how the Chameleon mechanism affects the clustering of dark matter and halos on full non-linear scales.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/9d4fab7d84d79bde8e5ad20051dce0860f546bf1

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Citations in the corpus

Modified Gravity and Cosmology (2011, background): “The formation of non-linear structure has also been considered in [630, 1006, 1007, 1114, 1303].”
ECOSMOG: an Efficient COde for Simulating MOdified Gravity (2011, methodology): “As in [22], we will not solve f̃R directly as it may change too quickly from one space point to another and can cause divergence problems in the numerical solutions.”
Accurate halo-model matter power spectra with dark energy, massive neutrinos and modified gravitational forces (2016, background): “Determining when this condition is satisfied in a cosmological context can be achieved using simulations (Oyaizu 2008; Zhao et al. 2011; Li et al. 2012; Puchwein et al. 2013; Llinares et al. 2014; summarized by Winther et al. 2015) or via direct calculations in idealized situations with symmetry…”
Numerical simulations of the dark universe: State of the art and the next decade (2012, background): “Promising initial progress is already being made in this area [402–405].”
Cosmology and Fundamental Physics with the Euclid Satellite (2012, methodology): “The first simulations of modified gravity cosmologies, limited to the “Chameleon” screening mechanism featured by f (R) theories, have been performed by means of mesh-based iterative relaxation schemes (Oyaizu 2008; Oyaizu et al. 2008; Schmidt et al. 2009; Khoury and Wyman 2009; Zhao et al. 2011; Da”
Modified Gravity-GADGET: A new code for cosmological hydrodynamical simulations of modified gravity models (2013, background): “…(Jennings et al. 2012), geometrical and dynamical properties of virialized halos (Lombriser et al. 2012a; Lee et al. 2013; Lam et al. 2012; Llinares & Mota 2013b), or the statistics of CDM halos and voids (as in Zhao et al. 2010; Zhao et al. 2011; Winther et al. 2012; Li et al. 2012a).”