New energy definition for higher-curvature gravities

被引：80

作者：

Deser, S. ^{[1
]}

Tekin, Bayram

机构：

[1] CALTECH, Pasadena, CA 91125 USA

[2] Brandeis Univ, Waltham, MA 02454 USA

[3] Middle E Tech Univ, Dept Phys, Fac Arts & Sci, TR-06531 Ankara, Turkey

来源：

PHYSICAL REVIEW D | 2007年 / 75卷 / 08期

关键词：

D O I：

10.1103/PhysRevD.75.084032

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We propose a novel but natural definition of conserved quantities for gravity models of quadratic and higher order in curvature. Based on the spatial asymptotics of curvature rather than of metric, it avoids the more egregious problems-such as zero-energy '' theorems '' and failure in flat backgrounds-in this fourth-derivative realm. In D > 4, the present expression indeed correctly discriminates between second-derivative Gauss-Bonnet and generic, fourth-derivative actions.

引用

页数：3

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