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

页码：1177 / 1184

页数：8

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