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Voids and halo cosmology within modified gravity

Grant number: 15/01721-9
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): December 01, 2015
Effective date (End): January 31, 2020
Field of knowledge:Physical Sciences and Mathematics - Physics
Principal Investigator:Marcos Vinicius Borges Teixeira Lima
Grantee:Eder Leonardo Duarte Perico
Home Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated scholarship(s):18/11867-9 - Voids as a probe of modified gravity, BE.EP.PD


We are interested in testing alternative gravitational theories, modified on cosmological scales.We will analyze n-body cosmological simulations in order to obtain complementary observables such as dark matter halo and void abundances as a function of its mass and red-shift.We will use this complementary observables, in particular the void abundance, in order to constrain the cosmological sector that drive the current accelerated stage (cosmological constant or modified gravity with chameleon effect).On the other hand, in order to test the vality of the Vlasov equation during the formation of halos, we will follow up the evolution of its entropy and phase-space mixing level in cosmological simulations.This will allow us to enhance the physical implementation of the incomplete violent relaxation mechanism in halo formation process, in order to improve the current virialized halo profile predictions

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
PERICO, E. L. D.; TAMAYO, D. A. Running vacuum cosmological models: linear scalar perturbations. Journal of Cosmology and Astroparticle Physics, n. 8 AUG 2017. Web of Science Citations: 2.

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