A Remark on the Reeb Flow for Spheres
Roger Casals, Francisco Presas · arXiv (Cornell University) · 2013
We prove the non--triviality of the Reeb flow for the (2n+1)--dimensional standard contact spheres inside the fundamental group of their contactomorphism group, n greater than 3. The argument uses the existence of homotopically non--trivial 2--spheres in the space of contact structures of a 3--Sasakian manifold.