Note: why is the metric invertible?

被引：3

作者：

Deser, S ^{[1
]}

机构：

[1] Brandeis Univ, Dept Phys, Waltham, MA 02454 USA

[2] CALTECH, Lauritsen Lab, Pasadena, CA 91125 USA

来源：

CLASSICAL AND QUANTUM GRAVITY | 2006年 / 23卷 / 13期

关键词：

D O I：

10.1088/0264-9381/23/13/N01

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We raise, and provide an ( unsatisfactory) answer to the title's question: why, unlike all other fields, does the gravitational 'metric' variable not have zero vacuum? After formulating the question, but without begging it, we exhibit additions to the conventional action that express the existence of the inverse through a field equation.

引用

页码：4539 / 4541

页数：3