The viability of theories with matter coupled to the Ricci scalar

被引：53

作者：

Sotiriou, Thomas P. ^{[1
]}

机构：

[1] Univ Maryland, Ctr Fundamental Phys, College Pk, MD 20742 USA

来源：

PHYSICS LETTERS B | 2008年 / 664卷 / 4-5期

基金：

美国国家科学基金会;

关键词：

modified gravity; extra force; f(R) gravity;

D O I：

10.1016/j.physletb.2008.05.050

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recently there has been a proposal for modified gravitational f(R) actions which include a direct coupling between the matter action and the Ricci scalar, R. Of particular interest is the specific case where both the action and the coupling are linear in R. It is shown that such an action leads to a theory of gravity which includes higher order derivatives of the matter fields without introducing more dynamics in the gravity sector and, therefore, cannot be a viable theory for gravitation. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：225 / 228

页数：4

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