Current status of modified gravity

被引：25

作者：

Boubekeur, Lotfi ^{[1
,2
]}

Giusarma, Elena ^{[3
,4
]}

Mena, Olga ^{[1
]}

Ramirez, Hector ^{[1
]}

机构：

[1] Univ Valencia, CSIC, Inst Fis Corpuscular IFIC, E-46071 Valencia, Spain

[2] Univ Constantine I, Lab Phys Math & Subatom, Constantine 25000, Algeria

[3] Univ Roma La Sapienza, Dept Phys, I-00185 Rome, Italy

[4] Univ Roma La Sapienza, Ist Nazl Fis Nucl, I-00185 Rome, Italy

来源：

PHYSICAL REVIEW D | 2014年 / 90卷 / 10期

关键词：

COSMOLOGICAL PARAMETERS; NONLINEAR MATTER; 3-YEAR DATA; CONSTRAINTS; PERTURBATIONS; NEUTRINOS; CONSTANT; UNIVERSE; MODEL; CMB;

D O I：

10.1103/PhysRevD.90.103512

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We revisit the cosmological viability of the Hu-Sawicki modified gravity scenario. The impact of such a modification on the different cosmological observables, including gravitational waves, is carefully described. The most recent cosmological data, as well as constraints on the relationship between the clustering parameter sigma(8) and the current matter mass-energy density Omega(m) from cluster number counts and weak lensing tomography, are considered in our numerical calculations. The strongest bound we find is vertical bar f(R0)vertical bar < 3.7 x 10(-6) at 95% C.L. Forthcoming cluster surveys covering 10 000 deg(2) in the sky, with galaxy surface densities of O(10) arcmin(-2) could improve the precision in the sigma(8)-Omega(m) relationship, tightening the above constraint.

引用

页数：10

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