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arXiv 0709.0345math.DG
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黎曼几何和自旋几何中的Branson Q曲率

Branson's Q-curvature in Riemannian and Spin Geometry

Oussama Hijazi, Simon Raulot

摘要:

在四维闭黎曼流形上,我们给出了Yamabe算子第一特征值的平方关于全Branson Q曲率的一个下界.因此,如果流形是自旋的,我们将狄拉克算子的第一本征值与全布兰森Q曲率联系起来。在一个封闭的n维流形$n\ge 5$上,我们通过第一特征值比较了三个基本的共形协变算子:Branson-Paneitz算子、Yamabe算子和Dirac算子(如果流形是自旋的)。平等案件也有特点。

英文摘要:

On a closed 4-dimensional Riemannian manifold, we give a lower bound for the square of the first eigenvalue of the Yamabe operator in terms of the total Branson's Q-curvature. As a consequence, if the manifold is spin, we relate the first eigenvalue of the Dirac operator to the total Branson's Q-curvature. On a closed n-dimensional manifold, $n\ge 5$, we compare the three basic conformally covariant operators : the Branson-Paneitz, the Yamabe and the Dirac operator (if the manifold is spin) through their first eigenvalues. Equality cases are also characterized.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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