Elliptic Flowers: simply connected billiard tables with chaotic or non-chaotic flows moving around chaotic or non-chaotic cores

TL;DR

This paper introduces a new class of simply connected billiard tables with either chaotic or non-chaotic flows around cores, facilitating experimental and theoretical studies of complex dynamical behaviors in Hamiltonian systems.

Contribution

It presents a novel class of billiards with unidirectional flows around cores, differing from traditional scatterer-based billiards, enabling easier experimental and mathematical analysis.

Findings

Billiards with chaotic unidirectional flows around cores.

Tables are simply connected, unlike many complex billiard shapes.

Potential for new insights into classical and quantum Hamiltonian dynamics.

Abstract

We introduce a class of billiards with chaotic unidirectional flows (or non-chaotic unidirectional flows with "vortices") which go around a chaotic or non-chaotic "core", where orbits can change their orientation. Moreover, the corresponding billiard tables are simply connected in difference with many attempts to build billiards with interesting and/or exotic dynamics by putting inside billiard tables various "scatterers" with funny shapes. Therefore the billiards in this new class are amenable to experimental studies in physics labs as well as to the rigorous mathematical ones, which may shed a new light on understanding of classical and quantum dynamics of Hamiltonian systems.