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arXiv · 2403.08647

Rigidity of Einstein manifolds with positive Yamabe invariant

Letizia Branca·Giovanni Catino·Davide Dameno·Paolo Mastrolia
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Abstract

We provide optimal pinching results on closed Einstein manifolds with positive Yamabe invariant in any dimension, extending the optimal bound for the scalar curvature due to Gursky and LeBrun in dimension four. We also improve the known bounds of the Yamabe invariant \emph{via} the $L^{\frac{n}{2}}$-norm of the Weyl tensor for low-dimensional Einstein manifolds. Finally, we discuss some advances on an algebraic inequality involving the Weyl tensor for dimensions $5$ and $6$.

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Letizia Branca, Giovanni Catino, Davide Dameno, Paolo Mastrolia. 2024-03-13. Rigidity of Einstein manifolds with positive Yamabe invariant. https://arxiv.org/abs/2403.08647

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