Geodesics on the unit tangent bundle

Geodesics on the unit tangent bundle
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单位切丛上的测地线

DOI:
10.1017/s0308210500002882
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发表时间:
2003
期刊:
Proceedings of the Royal Society of Edinburgh: Section A Mathematics
影响因子:
--
通讯作者:
L. Vanhecke
L. Vanhecke
中科院分区:
--
文献类型:
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作者:
J. Berndt;E. Boeckx;P. Nagy;L. Vanhecke

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黎曼流形(M,g)的单位切球丛T1 M上的测地线γ,如果具有Sasaki度量gS,可以看作M上的曲线x和沿其沿着的单位向量场V.特别地,我们研究了对于哪些流形(M,g),所有这些曲线都具有恒定的第一曲率κ1或具有消失曲率κi(i = 1,2或3)。
A geodesic γ on the unit tangent sphere bundle T1M of a Riemannian manifold (M, g), equipped with the Sasaki metric gS, can be considered as a curve x on M together with a unit vector field V along it. We study the curves x. In particular, we investigate for which manifolds (M, g) all these curves have constant first curvature κ1 or have vanishing curvature κi for some i = 1, 2 or 3.