Curvature-driven acceleration: a utopia or a reality?

被引：60

作者：

Das, Sudipta ^{[1
]}

Banerjee, Narayan

Dadhich, Naresh

机构：

[1] Jadavpur Univ, Dept Phys, Relat & Cosmol Res Ctr, Kolkata 700032, W Bengal, India

[2] Inter Univ Ctr Astron & Astrophys, Pune 411007, Maharashtra, India

来源：

CLASSICAL AND QUANTUM GRAVITY | 2006年 / 23卷 / 12期

关键词：

D O I：

10.1088/0264-9381/23/12/012

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The present work shows that a combination of nonlinear contributions from the Ricci curvature in Einstein field equations can drive a late time acceleration of expansion of the universe. The transit from the decelerated to the accelerated phase of expansion takes place smoothly without having to resort to a study of asymptotic behaviour. This result emphasizes the need for thorough and critical examination of models with nonlinear contribution from the curvature.

引用

页码：4159 / 4165

页数：7

共 32 条

[1] Consistent modified gravity: dark energy, acceleration and the absence of cosmic doomsday [J].

Abdalla, MCB ;

Nojiri, S ;

Odintsov, SD .

CLASSICAL AND QUANTUM GRAVITY, 2005, 22 (05) :L35-L42

[2] Exploring the expanding Universe and dark energy using the statefinder diagnostic [J].

Alam, U ;

Sahni, V ;

Saini, TD ;

Starobinsky, AA .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2003, 344 (04) :1057-1074

[3]

ALAM U, 2002, ASTROPH0209443

[4] Dark energy dominance and cosmic acceleration in first-order formalism [J].

Allemandi, G ;

Borowiec, A ;

Francaviglia, M ;

Odintsov, SD .

PHYSICAL REVIEW D, 2005, 72 (06)

[5] Accelerated cosmological models in first-order nonlinear gravity [J].

Allemandi, G ;

Borowiec, A ;

Francaviglia, M .

PHYSICAL REVIEW D, 2004, 70 (04)

[6] THE STABILITY OF GENERAL RELATIVISTIC COSMOLOGICAL THEORY [J].

BARROW, JD ;

OTTEWILL, AC .

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1983, 16 (12) :2757-2776

[7] First-year Wilkinson Microwave Anisotropy Probe (WMAP) observations:: Preliminary maps and basic results [J].

Bennett, CL ;

Halpern, M ;

Hinshaw, G ;

Jarosik, N ;

Kogut, A ;

Limon, M ;

Meyer, SS ;

Page, L ;

Spergel, DN ;

Tucker, GS ;

Wollack, E ;

Wright, EL ;

Barnes, C ;

Greason, MR ;

Hill, RS ;

Komatsu, E ;

Nolta, MR ;

Odegard, N ;

Peiris, HV ;

Verde, L ;

Weiland, JL .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2003, 148 (01) :1-27

[8] Precision cosmology? Not just yet ... [J].

Bridle, SL ;

Lahav, O ;

Ostriker, JP ;

Steinhardt, PJ .

SCIENCE, 2003, 299 (5612) :1532-1533

[9] Curvature quintessence matched with observational data [J].

Capozziello, S ;

Cardone, VF ;

Carloni, S ;

Troisi, A .

INTERNATIONAL JOURNAL OF MODERN PHYSICS D, 2003, 12 (10) :1969-1982

[10]

CAPOZZIELLO S, 2003, ASTROPH0303041

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