- Vivi Padova
- Il Bo
Wednesday 24 April 2013 h. 15:00, room 2BC30
Gabriella Schirinzi (Padova, Dip. Mat.)
"Almost integrable Hamiltonian systems and the approach of the Perturbation Theory"
A Hamiltonian dynamical system is a system whose dynamic can be described by the Hamilton's equations. When we study such a system we try to find an explicit expression for the solutions of the equations, but this is not always possible, that is a Hamiltonian system is not always "integrable". Many of the most important physical systems are not integrable but their dynamic can be described by a Hamiltonian which is a small perturbation of an integrable one. This kind of functions, called "almost integrable Hamiltonians", are studied by the Hamiltonian Perturbation Theory.
After recalling basic notions about Lagrangian and Hamiltonian mechanics, I will introduce almost integrable systems and give an introduction to the approach of the Perturbation Theory, stating the main results.
Rif. int. C. Marastoni, T. Vargiolu