Department of Physics and Astronomy

University of Mississippi

Events

Event Information:

  • Tue
    05
    Apr
    2016

    Colloquium

    4:00 pmLewis Hall 101

    Pengfei Zhang
    Department of Mathematics
    University of Mississippi

    Homoclinic Intersections for Geodesic Flows on Convex Spheres

    Transverse homoclinic intersection was discovered by Poincare in the study of stability properties of periodic orbits of n-body problem. Poincare realized that this is a mechanism which not only destroys the stability of periodic orbits but also leads the existence of chaos in the phase space.

    In this talk, we will study the geodesic flows on convex spheres. We show that, generically, every closed geodesic is either hyperbolic or irrationally elliptic. Moreover, every hyperbolic closed geodesic admits some transverse homoclinic intersection. Therefore, (everywhere) chaotic dynamics can happen generically on manifolds with simple/trivial topology.