Modified gravity with ln R terms and cosmic acceleration

被引：400

作者：

Nojiri, S ^{[1
]}

Odintsov, SD

机构：

[1] Natl Def Acad, Dept Appl Phys, Yokosuka, Kanagawa 2398686, Japan

[2] IEEC, Barcelona 08034, Spain

[3] TSPU, Tomsk, Russia

[4] ICREA, Barcelona, Spain

来源：

GENERAL RELATIVITY AND GRAVITATION | 2004年 / 36卷 / 08期

关键词：

fourth-order gravity; cosmology; dark energy;

D O I：

10.1023/B:GERG.0000035950.40718.48

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The modified gravity with ln R or R-n (ln R)(m) terms which grow at small curvature is discussed. It is shown that such a model which has a well-defined Newtonian limit may eliminate the need for dark energy and may provide the current cosmic acceleration. It is demonstrated that R-2 terms are important not only for early time inflation but also to avoid the instabilities and the linear growth of the gravitational force. It is very interesting that the condition of no linear growth for gravitational force coincides with the one for scalar mass in the equivalent scalar-tensor theory to be very large. Thus, modified gravity with R-2 term seems to be a viable classical theory.

引用

页码：1765 / 1780

页数：16

共 23 条

[11]

MENG X, 2003, ASTROPH0308284

[12]

MENG Z, 2003, ASTROPH0308031

[13]

MENG Z, 2003, ASTROPH0307354

[14] A measurement by BOOMERANG of multiple peaks in the angular power spectrum of the cosmic microwave background [J].

Netterfield, CB ;

Ade, PAR ;

Bock, JJ ;

Bond, JR ;

Borrill, J ;

Boscaleri, A ;

Coble, K ;

Contaldi, CR ;

Crill, BP ;

de Bernardis, P ;

Farese, P ;

Ganga, K ;

Giacometti, M ;

Hivon, E ;

Hristov, VV ;

Iacoangeli, A ;

Jaffe, AH ;

Jones, WC ;

Lange, AE ;

Martinis, L ;

Masi, S ;

Mason, P ;

Mauskopf, PD ;

Melchiorri, A ;

Montroy, T ;

Pascale, E ;

Piacentini, F ;

Pogosyan, D ;

Pongetti, F ;

Prunet, S ;

Romeo, G ;

Ruhl, JE ;

Scaramuzzi, F .

ASTROPHYSICAL JOURNAL, 2002, 571 (02) :604-614

[15] Modified gravity with negative and positive powers of curvature: Unification of inflation and cosmic acceleration [J].

Nojiri, S ;

Odintsov, SD .

PHYSICAL REVIEW D, 2003, 68 (12)

[16]

NOJIRI S, 2003, HEPTH0307288

[17]

NOJIRI S, 2003, HEPTH0307071

[18] Measurements of Ω and Λ from 42 high-redshift supernovae [J].

Perlmutter, S ;

Aldering, G ;

Goldhaber, G ;

Knop, RA ;

Nugent, P ;

Castro, PG ;

Deustua, S ;

Fabbro, S ;

Goobar, A ;

Groom, DE ;

Hook, IM ;

Kim, AG ;

Kim, MY ;

Lee, JC ;

Nunes, NJ ;

Pain, R ;

Pennypacker, CR ;

Quimby, R ;

Lidman, C ;

Ellis, RS ;

Irwin, M ;

McMahon, RG ;

Ruiz-Lapuente, P ;

Walton, N ;

Schaefer, B ;

Boyle, BJ ;

Filippenko, AV ;

Matheson, T ;

Fruchter, AS ;

Panagia, N ;

Newberg, HJM ;

Couch, WJ .

ASTROPHYSICAL JOURNAL, 1999, 517 (02) :565-586

[19] Observational evidence from supernovae for an accelerating universe and a cosmological constant [J].

Riess, AG ;

Filippenko, AV ;

Challis, P ;

Clocchiatti, A ;

Diercks, A ;

Garnavich, PM ;

Gilliland, RL ;

Hogan, CJ ;

Jha, S ;

Kirshner, RP ;

Leibundgut, B ;

Phillips, MM ;

Reiss, D ;

Schmidt, BP ;

Schommer, RA ;

Smith, RC ;

Spyromilio, J ;

Stubbs, C ;

Suntzeff, NB ;

Tonry, J .

ASTRONOMICAL JOURNAL, 1998, 116 (03) :1009-1038

[20]

SOUSSA ME, 2003, ASTROPH0308114

← 1 2 3 →