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Study of cubic Galileon gravity using N-body simulations

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Title
Study of cubic Galileon gravity using N-body simulations
Author(s)
Jiajun Zhang; Bikash R. Dinda; Md. Wali Hossain; Anjan A. Sen; Wentao Luo
Subject
INITIAL CONDITIONS, ; DARK ENERGY, ; COSMOLOGY, ; DYNAMICS, ; UNIVERSE, ; LAMBDA, ; SPACE, ; VOIDS
Publication Date
2020-08
Journal
PHYSICAL REVIEW D, v.102, no.4, pp.043510
Publisher
AMER PHYSICAL SOC
Abstract
© 2020 American Physical Society. We use N-body simulation to study the structure formation in the cubic Galileon gravity model where along with the usual kinetic and potential term we also have a higher derivative self-interaction term. We find that the large scale structure provides a unique constraining power for this model. The matter power spectrum, halo mass function, galaxy-galaxy weak lensing signal, marked density power spectrum as well as count in cell are measured. The simulations show that there are less massive halos in the cubic Galileon gravity model than corresponding ACDM model and the marked density power spectrum in these two models are different by more than 10%. Furthermore, the cubic Galileon model shows significant differences in voids compared to ACDM. The number of low density cells is far higher in the cubic Galileon model than that in the ACDM model. Therefore, it would be interesting to put constraints on this model using future large scale structure observations, especially in void regions
URI
https://pr.ibs.re.kr/handle/8788114/7701
DOI
10.1103/PhysRevD.102.043510
ISSN
2470-0010
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > 1. Journal Papers (저널논문)
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