Stability of the Einstein static universe in IR modified Horava gravity

被引：51

作者：

Boehmer, Christian G. ^{[1
,2
]}

Lobo, Francisco S. N. ^{[3
]}

机构：

[1] UCL, Dept Math, London WC1E 6BT, England

[2] UCL, Inst Origins, London WC1E 6BT, England

[3] Univ Lisbon, Fac Ciencias, Ctr Fis Teor & Computac, P-1649003 Lisbon, Portugal

来源：

EUROPEAN PHYSICAL JOURNAL C | 2010年 / 70卷 / 04期

关键词：

BLACK-HOLE; LIFSHITZ; COSMOLOGY;

D O I：

10.1140/epjc/s10052-010-1503-3

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Recently, HoA (TM) ava proposed a power counting renormalizable theory for (3+1)-dimensional quantum gravity, which reduces to Einstein gravity with a non-vanishing cosmological constant in IR, but possesses improved UV behaviors. In this work, we analyze the stability of the Einstein static universe by considering linear homogeneous perturbations in the context of an IR modification of HoA (TM) ava gravity, which implies a 'soft' breaking of the 'detailed balance' condition. The stability regions of the Einstein static universe is parameterized by the linear equation of state parameter w=p/rho and the parameters appearing in the HoA (TM) ava theory, and it is shown that a large class of stable solutions exists in the respective parameter space.

引用

页码：1111 / 1118

页数：8

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