3 papers
math.DS2025
Chaotic Boltzmann's Billiard Systems at positive energy
Irene De Blasi, Airi Takeuchi, Susanna Terracini
This paper deals with the so-called Boltzmann billiard, that is, a billiard subjected to a central force of the type , and being positive constants, and wi…
astro-ph.EP2021
Nekhoroshev estimates for the orbital stability of Earth's satellites
Alessandra Celletti, Irene De Blasi, Christos Efthymiopoulos
We provide stability estimates, obtained by implementing the Nekhoroshev theorem, in reference to the orbital motion of a small body (satellite or space debris) around the Earth. W…
math.DS2021
On some Refraction Billiards
Irene De Blasi, Susanna Terracini
The aim of this work is to continue the analysis, started in arXiv:2105.02108, of the dynamics of a point-mass particle moving in a galaxy with an harmonic biaxial core, in who…