搜索结果: 1-2 共查到“相对论与引力场 second-order”相关记录2条 . 查询时间(0.14 秒)
Complete classification of second-order symmetric spacetimes
second-order symmetric spacetimes
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2010/3/18
As a difference with the positive-definite Riemannian case, in the Lorentzian case there exists proper second-order symmetric spacetimes, i.e., those with vanishing second covariant derivative of the ...
Late time behavior of closed isotropic models in second order gravity theory
closed isotropic models order gravity theory
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2010/3/17
Homogeneous and isotropic closed models are studied in both the Einstein and the Jordan frame of the second order gravity theory. The normal form of the dynamical system has periodic solutions for a l...