Higher dimensional Bondi energy with a globally specified background structure

Higher dimensional Bondi energy with a globally specified background structure
复制标题

具有全局指定背景结构的高维邦迪能量

DOI:
10.1088/0264-9381/25/16/165004
复制
发表时间:
2007
影响因子:
3.5
通讯作者:
A. Ishibashi
A. Ishibashi
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
A. Ishibashi

文献摘要

参考文献

被引文献

相似文献

最近,在共形无穷大和哈密顿形式主义的框架内,人们提出了一种更高维(甚至时空)的邦迪能量的推广(Hollands and Ishibashi 2005 J. Math. Phys. 46 022503)。然而,霍兰和石桥用来推导出邦迪能量表达式的规范条件是特殊的,因为由该规范指定的零无穷大截面是各向异性的,实际上是非紧的。因此,在一般渐近平坦的辐射时空中,这个规范很难用于明确计算邦迪能量。同样,在这种规范条件下,我们也不清楚高维的邦迪能量表达式和四维的邦迪能量表达式之间的明显差异是由于规范的选择,还是由于高维引力与四维引力的性质不同。在本文中,我们考虑,而不是高斯零共形规范作为一个更自然的规范条件,承认一个全球规范的背景结构紧凑,球形横截面的零无穷大。相应地,我们修改了以前高维新闻张量的定义,使其在高斯零共形规范中得到很好的定义,并推导出真空解的新规范选择中的邦迪能量动量表达式,它在大于或等于4的任意(甚至时空)维度中具有普遍形式。
A higher (even spacetime) dimensional generalization of the Bondi energy has recently been proposed (Hollands and Ishibashi 2005 J. Math. Phys. 46 022503) within the framework of conformal infinity and Hamiltonian formalism. The gauge condition employed in Hollands and Ishibashi to derive the Bondi-energy expression is, however, peculiar in the sense that cross sections of null infinity specified by that gauge are anisotropic and in fact non-compact. For this reason, that gauge is difficult to use for explicit computation of the Bondi energy in general, asymptotically flat radiative spacetimes. Also it is not clear, under that gauge condition, whether an apparent difference between the expressions of higher dimensional Bondi energy and the four-dimensional one is due to the choice of gauges or a qualitatively different nature of higher dimensional gravity from four-dimensional gravity. In this paper, we consider instead, the Gaussian null conformal gauge as one of the more natural gauge conditions that admit a global specification of background structure with compact, spherical cross sections of null infinity. Accordingly, we modify the previous definition of higher dimensional news tensor so that it becomes well defined in the Gaussian null conformal gauge and derive, for vacuum solutions, an expression for the Bondi energy–momentum in the new gauge choice, which takes a universal form in arbitrary (even spacetime) dimensions greater than or equal to 4.
DOI: --
发表时间: 2002
影响因子: 8.6
作者:
G. Gibbons;D. Ida;T. Shiromizu
通讯作者: T. Shiromizu
DOI: 10.1143/ptp.110.901
发表时间: 2003-05
影响因子: --
作者:
Akihiro Ishibashi;Hideo Kodama
通讯作者: Akihiro Ishibashi;Hideo Kodama
DOI: 10.1088/0264-9381/19/12/501
发表时间: 2002
影响因子: 3.5
作者:
P T Chrusciel and E Delay
通讯作者: P T Chrusciel and E Delay
DOI: --
发表时间: 2002
期刊: Physical Review Letters 89
影响因子: --
作者:
G. W. Gibbons;D. Ida;T. Shiromizu
通讯作者: T. Shiromizu