Energy-momentum and angular momentum carried by gravitational waves in extended new general relativity

被引:2
|
作者
Sakane, E [1 ]
Kawai, T [1 ]
机构
[1] Osaka City Univ, Grad Sch Sci, Dept Phys, Osaka 5588585, Japan
来源
PROGRESS OF THEORETICAL PHYSICS | 2002年 / 108卷 / 04期
关键词
D O I
10.1143/PTP.108.615
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In an extended, new form of general relativity, which is a teleparallel theory of gravity, we examine the energy-momentum and angular momentum carried by gravitational wave radiated from Newtonian point masses in a weak-field approximation. The resulting wave form is identical to the corresponding wave form in general relativity, which is consistent with previous results in teleparallel theory. The expression for the dynamical energy-momentum density is identical to that for the canonical energy-momentum density in general relativity up to leading order terms on the boundary of a large sphere including the gravitational source, and the loss of dynamical energy-momentum, which is the generator of internal translations, is the same as that of the canonical energy-momentum in general relativity. Under certain asymptotic conditions for a non-dynamical Higgs-type field psi(k), the loss of ''spin" angular momentum, which is the generator of internal SL(2,C) transformations, is the same as that of angular momentum in general relativity, and the losses of canonical energy-momentum and orbital angular momentum, which constitute the generator of Poincare coordinate transformations, are vanishing. The results indicate that our definitions of the dynamical energy-momentum and angular momentum densities in this extended new general relativity work well for gravitational wave radiations, and the extended new general relativity accounts for the Hulse-Taylor measurement of the pulsar PSR1913+16.
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页码:615 / 639
页数:25
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