Homogeneous Einstein Finsler Metrics on $(4n+3)$ -dimensional Spheres
Homogeneous Einstein Finsler Metrics on $(4n+3)$ -dimensional Spheres
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DOI:
10.4153/s0008439518000139
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发表时间:
2018-11
期刊:
影响因子:
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通讯作者:
Libing Huang;X. Mo
中科院分区:
文献类型:
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作者:
Libing Huang;X. Mo
Abstract In this paper, we study a class of homogeneous Finsler metrics of vanishing $S$ -curvature on a $(4n+3)$ -dimensional sphere. We find a second order ordinary differential equation that characterizes Einstein metrics with constant Ricci curvature $1$ in this class. Using this equation we show that there are infinitely many homogeneous Einstein metrics on $S^{4n+3}$ of constant Ricci curvature $1$ and vanishing $S$ -curvature. They contain the canonical metric on $S^{4n+3}$ of constant sectional curvature $1$ and the Einstein metric of non-constant sectional curvature given by Jensen in 1973.