Dynamics of Einstein-Aether scalar field cosmology

被引:21
|
作者
Paliathanasis, Andronikos [1 ]
Papagiannopoulos, G. [2 ]
Basilakos, Spyros [3 ,4 ]
Barrow, John D. [5 ]
机构
[1] Durban Univ Technol, Inst Syst Sci, ZA-4000 Durban, South Africa
[2] Univ Athens, Fac Phys, Dept Astron Astrophys Mech, Athens 15783, Greece
[3] Acad Athens, Res Ctr Astron & Appl Math, Soranou Efesiou 4, Athens 11527, Greece
[4] Natl Observ Athens, POB 20048, Athens 11810, Greece
[5] Univ Cambridge, Ctr Math Sci, DAMTP, Wilberforce Rd, Cambridge CB3 0WA, England
来源
EUROPEAN PHYSICAL JOURNAL C | 2019年 / 79卷 / 08期
基金
英国科学技术设施理事会;
关键词
D O I
10.1140/epjc/s10052-019-7229-y
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
We study the cosmological evolution of the field equations in the context of Einstein-Aether cosmology by including a scalar field in a spatially flat Friedmann-Lemaitre-Robertson-Walker spacetime. Our analysis is separated into two separate where a pressureless fluid source is included or absent. In particular, we determine the critical points of the field equations and we study the stability of the specific solutions. The limit of general relativity is fully recovered, while the dynamical system admits de Sitter solutions which can describe the past inflationary era and the future late-time attractor. Results for generic scalar field potentials are presented while some numerical behaviours are given for specific potential forms.
引用
收藏
页数:13
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