CURVATURE-SQUARED COSMOLOGY IN THE 1ST-ORDER FORMALISM

被引：13

作者：

SHAHIDSALESS, B ^{[1
]}

机构：

[1] NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771

来源：

JOURNAL OF MATHEMATICAL PHYSICS | 1990年 / 31卷 / 10期

关键词：

D O I：

10.1063/1.528848

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Variation of the R + αR2 action with respect to independent metric and connection fields is shown to be equivalent to the metric-compatible fourth-order gravity coupled to a vector defined as a function of the trace of the energy-momentum tensor. The field equations are second order. The Friedmann cosmology based on this model is studied and it is shown to include nonsingular solutions at t = 0. © 1990 American Institute of Physics.

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页码：2429 / 2433

页数：5

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