A new coordinate condition in general relativity

1992 ◽  
Vol 24 (10) ◽  
pp. 1033-1045 ◽  
Author(s):  
Yishi Duan ◽  
Shengli Zhang ◽  
Licai Jiang
Keyword(s):  
General Relativity ◽  
Coordinate Condition

FOURTH-ORDER TOPOLOGICAL TENSOR CURRENT AND FOCK'S COORDINATE CONDITION

1998 ◽  
Vol 13 (10) ◽  
pp. 745-752 ◽  
Author(s):  
GUOHONG YANG ◽  
YISHI DUAN
Keyword(s):  
General Relativity ◽  
Fourth Order ◽  
Mapping Method ◽  
Coordinate Condition ◽  
Tensor Current ◽  
Special Case ◽  
Topological Tensor ◽  
Singular Manifolds

From ϕ-mapping method we construct a fouth-order topological tensor current in general. It is shown that the inner structure of this topological tensor current is labelled by the δ-function δ(ϕ), which represents some four-dimensional singular manifolds. By investigating the total expansion of δ(ϕ), these singular manifolds carry the topological numbers βiηi naturally, which does not involve any concrete models. As the generalization of Nielsen's Lagrangian and Nambu's action for strings, we present a new coordinate condition in general relativity, which includes the Fock's coordinate condition as a special case.

General Relativity

2006 ◽  
Author(s):  
M. P. Hobson ◽  
G. P. Efstathiou ◽  
A. N. Lasenby
Keyword(s):  
General Relativity
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