arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1111.2755gr-qc
收藏

关于Bel辐射引力场

On the Bel radiative gravitational fields

Joan Josep Ferrando, Juan Antonio Sáez

摘要:

本文分析了Bel定义的内禀辐射引力场的概念,指出了N、III和II三种辐射类型对应于以下三种不同的物理情形:{ \it纯辐射}、{ \it渐近纯辐射}和{ \it generic}(非纯、非渐近纯){ \it辐射}。本文引入了{ \em静止观测者}关于引力场的概念和{ \em固有超能量}关于引力场的概念,并证明了对于无辐射场,相对超能量密度的最小值就是固有超能量密度,它是静止观测者关于引力场获得的.几个{ \it超能量不等式}也检查。

英文摘要:

We analyze the concept of intrinsic radiative gravitational fields defined by Bel and we show that the three radiative types, N, III and II, correspond with the three following different physical situations: {\it pure radiation}, {\it asymptotic pure radiation} and {\it generic} (non pure, non asymptotic pure) {\it radiation}. We introduce the concept of {\em observer at rest} with respect to the gravitational field and that of {\em proper super-energy} of the gravitational field and we show that, for non radiative fields, the minimum value of the relative super-energy density is the proper super-energy density, which is acquired by the observers at rest with respect to the field. Several {\it super-energy inequalities} are also examined.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑