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On a hyperkähler view of the magnetic geodesic flow on CP^n
Speaker: Lina Deschamps

I will mainly explain Albers-Geiges-Zehmisch (arXiv:1705.08126) contact-geometric interpretation in terms of quaternionic symmetries of the lift of the magnetic geodesic flow from S^2 to S^3. As nice as it would be to generalize to higher projective spaces, the previous proof cannot be copy-pasted as it is (since the unitary tangent bundle S*CP^n is no longer simply connected for n>1). Does it mean there is no way to get a similar geometric interpretation? I'll try to convince you that thanks to the hyperkähler structure on the cotangent bundle of CP^n, hope exists!  

Date : Wed, May 8

Time: 11:15