University of Cambridge > Talks.cam > Geometric Analysis and Partial Differential Equations seminar > Index-energy estimates for Yang-Mills connections and Einstein metrics

Index-energy estimates for Yang-Mills connections and Einstein metrics

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  • UserCasey Kelleher (Princeton University)
  • ClockMonday 04 March 2019, 16:00-17:00
  • HouseCMS, MR13.

If you have a question about this talk, please contact Prof. Mihalis Dafermos.

We prove a conformally invariant estimate for the index of Schrödinger operators acting on vector bundles over four-manifolds, related to the classical Cwikel-Lieb-Rozenblum estimate. Applied to Yang-Mills connections we obtain a bound for the index in terms of its energy which is conformally invariant, and captures the sharp growth rate. Furthermore we derive an index estimate for Einstein metrics in terms of the topology and the Einstein-Hilbert energy. Lastly we derive conformally invariant estimates for the Betti numbers of an oriented four-manifold with positive scalar curvature. This is joint work with Matthew Gursky and Jeffrey Streets.

This talk is part of the Geometric Analysis and Partial Differential Equations seminar series.

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