14 juin 2017

Tristan C. Collins (Harvard et Göteborg)
Sasakian geometry and Einstein metrics

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Lieu : Salle 113-115

Résumé : I will give an introduction to Sasakian geometry, which is an odd-dimensional cousin of Kahler geometry, and which has been of interest lately due to its role in Kahler geometry (via tangent cones) and theoretical physics (via AdS/CFT). I will introduce the notion of K-stability, and discuss its role in the existence theory for Sasaki-Einstein metrics. In particular, I will discuss how K-stability can be used to produce infinitely many distinct Einstein metrics on the 5-sphere.

Sasakian geometry and Einstein metrics  Version PDF

juin 2017 :

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