EXACT SCALAR FIELD COSMOLOGIES IN (1+1) DIMENSIONS

被引：16
|
作者：
CHIMENTO, LP
COSSARINI, AE
机构：
[1] Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Pabellón I
来源：
CLASSICAL AND QUANTUM GRAVITY | 1994年 / 11卷 / 05期
关键词：
D O I：
10.1088/0264-9381/11/5/006
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report a series of exact cosmological solutions of the gravitational (1 + 1)-dimensional equations with a classical scalar field and an isotropic perfect fluid source. We consider a Robertson-Walker universe and obtain the scale factor and the field for several physically interesting potentials. In the case of a non-vanishing positive cosmological constant LAMBDA, we have found asymptotically de Sitter solutions which resemble the (3 + 1)-dimensional results, When LAMBDA = 0 we have to take restrictive conditions on the sip of the potential function in order to obtain exactly solvable models which include exponential inflationary processes.
引用
收藏
页码：1177 / 1184
页数：8
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