Cosmological expansion governed by a scalar field from a 5D vacuum

被引：1
|
作者：
Bellini, Mauricio
机构：
[1] Univ Mar del Plata, Fac Ciencias Exactas & Nat, Dept Fis, RA-7600 Mar Del Plata, Argentina
[2] Consejo Nacl Invest Cient & Tecn, RA-1033 Buenos Aires, DF, Argentina
来源：
PHYSICS LETTERS B | 2006年 / 637卷 / 1-2期
关键词：
D O I：
10.1016/j.physletb.2006.04.033
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We consider a single field governed expansion of the universe from a five dimensional (5D) vacuum state. Under an appropiate change of variables the universe can be viewed in a effective manner as expanding in 4D with an effective equation of state which describes different epochs of its evolution. In the example here worked the universe firstly describes an inflationary phase, followed by a decelerated expansion. Thereafter, the universe is accelerated and describes a quintessential expansion to finally, in the future, be vacuum dominated. (c) 2006 Elsevier B.V. All rights reserved.
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收藏
页码：16 / 20
页数：5
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