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math.DS2026

Generic properties of planar symplectic billiards

Luca Baracco, Olga Bernardi, José Pedro Gaivão

We study generic properties of planar symplectic billiards, a symplectic analogue of classical Birkhoff billiards introduced by P. Albers and S. Tabachnikov. We prove that, for a r…

math.DS2026

Area spectral rigidity for axially symmetric symplectic billiard tables

Luca Baracco, Olga Bernardi, Alessandra Nardi

We prove that any finitely smooth axially symmetric strictly convex domain, with everywhere positive curvature and sufficiently close to an ellipse is area spectrally rigid. This m…

math.DS2025

Birkhoff attractors for dissipative symplectic billiards

Luca Baracco, Olga Bernardi, Anna Florio +1

The aim of the present paper is to propose and study a dissipative variant of symplectic billiards within planar strictly convex domains. The associated billiard map is dissipative…

math.DS2025

Starting the study of outer length billiards

Luca Baracco, Olga Bernardi, Corentin Fierobe

We focus on the outer length billiard dynamics, acting on the exterior of a strictly-convex planar domain. We first show that ellipses are totally integrable. We then provide an ex…

math.DS2024

Bialy-Mironov type rigidity for centrally symmetric symplectic billiards

Luca Baracco, Olga Bernardi, Alessandra Nardi

The aim of the present paper is to establish a Bialy-Mironov type rigidity for centrally symmetric symplectic billiards. For a centrally symmetric strongly-convex domain