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N-body Simulations for f(R) Gravity using a Self-adaptive Particle-Mesh Code

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arxiv 1011.1257 v2 pith:2NDHNBES submitted 2010-11-04 astro-ph.CO gr-qchep-th

classification astro-ph.COgr-qchep-th
keywords matterchameleoncodegravitymechanismn-bodynon-linearphys
verification ladder T0 review T1 audit T2 compute T3 formal
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We perform high resolution N-body simulations for f(R) gravity based on a self-adaptive particle- mesh 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.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Fullshape power spectrum for the Symmetron modified gravity model

    astro-ph.CO 2025-06 conditional novelty 6.0 of 10

    Applying the fkPT approximation to the Symmetron model yields a full-shape power spectrum within 1% of full kernels, and an MCMC pipeline recovers ΛCDM parameters from EZMocks.

  2. EFT-Ramses: a code to simulate the effective field theory of dark energy

    astro-ph.CO 2026-07 accept novelty 5.5 of 10

    A unified AMR N-body code embeds EFTofDE α-basis models into one master Vainshtein equation and matches legacy ECOSMOG and HiCOLA matter power spectra.

  3. Galaxy formation in modified gravity -- II. galaxy halo connection and assembly bias

    astro-ph.CO 2026-06 unverdicted novelty 4.0 of 10

    Simulations in f(R) gravity show that environment density in the HOD model reduces assembly bias effects to 2-3% at z≲0.5 in both ΛCDM and modified gravity.

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