Background cosmological dynamics in f(R) gravity and observational constraints

被引：34

作者：

Ali, Amna ^{[1
]}

Gannouji, Radouane ^{[2
]}

Sami, M. ^{[1
]}

Sen, Anjan A. ^{[1
]}

机构：

[1] Jamia Millia Islamia, Ctr Theoret Phys, New Delhi 110025, India

[2] IUCAA, Pune 411007, Maharashtra, India

来源：

PHYSICAL REVIEW D | 2010年 / 81卷 / 10期

关键词：

DARK ENERGY; CONSTANT; QUINTESSENCE; SUPERNOVAE; LAMBDA;

D O I：

10.1103/PhysRevD.81.104029

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper, we carry out a study of viable cosmological models in f(R) gravity at the background level. We use observable parameters like Omega and gamma to form an autonomous system of equations and show that the models under consideration exhibit two different regimes in their time evolution, namely, a phantom phase followed by a quintessencelike behavior. We employ state finder parameters to emphasize a characteristic discriminative signature of these models.

引用

页数：6

共 50 条

[41] New observational constraints on f (R) gravity from cosmic chronometers [J].

Nunes, Rafael C. ;

Pan, Supriya ;

Saridakis, Emmanuel N. ;

Abreu, Everton M. C. .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2017, (01)

[42] Constraints of f(R) gravity in Palatini approach with observational Hubble data [J].

ZHAI ZhongXu LIU WenBiao Department of Physics Institute of Theoretical Physics Beijing Normal University Beijing China .

Science China(Physics,Mechanics & Astronomy), 2011, (08) :1378-1383

[43] Examining the physical viability of the f(R) gravity via observational constraints [J].

Shaikh, A. Y. .

CHINESE JOURNAL OF PHYSICS, 2023, 86 :628-646

[44] Constraints of f(R) gravity in Palatini approach with observational Hubble data [J].

ZhongXu Zhai ;

WenBiao Liu .

Science China Physics, Mechanics and Astronomy, 2011, 54 :1378-1383

[45] Accelerating cosmological models in Hoyle-Narlikar gravity with observational constraints [J].

Maurya, Dinesh Chandra .

INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS, 2025,

[46] Cosmological perturbations and observational constraints on nonlocal massive gravity [J].

Nesseris, Savvas ;

Tsujikawa, Shinji .

PHYSICAL REVIEW D, 2014, 90 (02)

[47] A COSMOLOGICAL MODEL WITH SECOND LAW OF THERMODYNAMICS IN f(R, T) GRAVITY [J].

Tiwari, R. K. ;

Bharali, J. ;

Cherty, B. ;

Beesham, A. .

ASTROPHYSICS, 2025, 68 (01) :84-107

[48] Bulk viscous cosmological models in f(R,T) theory of gravity [J].

Mahanta, K. L. .

ASTROPHYSICS AND SPACE SCIENCE, 2014, 353 (02) :683-689

[49] The cosmological model in f (R,Tφ) gravity with Scalar Field conformity [J].

Singh, J. K. ;

Singh, Akanksha ;

Shaily ;

Jena, J. .

CHINESE JOURNAL OF PHYSICS, 2023, 86 :616-627

[50] Cosmological constraints on bulk viscous f(Q,T) gravity [J].

Sokoliuk, Oleksii ;

Baransky, Alexander .

ASTRONOMISCHE NACHRICHTEN, 2022, 343 (05)

← 1 2 3 4 5 →