Cosmology of f (R,□R) gravity

被引：22

作者：

Carloni, Sante ^{[1
]}

Rosa, Joao Luis ^{[1
]}

Lemos, Jose P. S. ^{[1
]}

机构：

[1] UL, IST, Ctr Astrofis & Gravitacao CENTRA, Ave Rovisco Pais 1, P-1049001 Lisbon, Portugal

来源：

PHYSICAL REVIEW D | 2019年 / 99卷 / 10期

关键词：

6TH-ORDER GRAVITY; DYNAMICS;

D O I：

10.1103/PhysRevD.99.104001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using dynamical system analysis, we explore the cosmology of theories of order up to eighth order of the form f(R,square R). The phase space of these cosmologies reveals that higher-order terms can have a dramatic influence on the evolution of the cosmology, avoiding the onset of finite time singularities. We also confirm and extend some of results which were obtained in the past for this class of theories.

引用

页数：21

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