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arXiv 1601.04837math.DG
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半共形平坦梯度Ricci几乎孤子

Half conformally flat gradient Ricci almost solitons

M. Brozos-Vázquez, E. García-Río, X. Valle-Regueiro

摘要:

研究了半共形平坦梯度Ricci几乎孤子的局部结构,证明了当势函数的梯度为非零时,半共形平坦梯度Ricci几乎孤子在任意点的邻域内都是局部共形平坦的.相反,如果势函数的梯度为零,则孤子是一个稳定的无迹$κ$ -Einstein孤子,并实现在仿射曲面的余切丛上。

英文摘要:

The local structure of half conformally flat gradient Ricci almost solitons is investigated, showing that they are locally conformally flat in a neighborhood of any point where the gradient of the potential function is non-null. In opposition, if the gradient of the potential function is null, then the soliton is a steady traceless $κ$-Einstein soliton and is realized on the cotangent bundle of an affine surface.

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