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We investigate the possibility of quantum (or wave) chaos for the Bogoliubov excitations of a Bose-Einstein condensate in billiards. Because of the mean field interaction in the condensate, the Bogoliubov excitations are very different from…

Soft Condensed Matter · Physics 2007-05-23 Chuanwei Zhang , Jie Liu , Mark G. Raizen , Qian Niu

The class of 2-dimensional non-integrable flat dynamical systems has a rather extensive literature with many deep results, but the methods developed for this type of problems, both the traditional approach via Teichm\"{u}ller geometry and…

Dynamical Systems · Mathematics 2024-05-30 J. Beck , W. W. L. Chen , Y. Yang

We study a class of planar billiards having the remarkable property that their phase space consists up to a set of zero measure of two invariant sets formed by orbits moving in opposite directions. The tables of these billiards are tubular…

Dynamical Systems · Mathematics 2009-11-13 Leonid A. Bunimovich , Gianluigi Del Magno

While billiard systems of various shapes have been used as paradigmatic model systems in the fields of nonlinear dynamics and quantum chaos, few studies have investigated anisotropic billiards. Motivated by the tremendous advances in using…

We study the quantum mechanics of a billiard (Robnik 1983) in the regime of mixed-type classical phase space (the shape parameter \lambda=0.15) at very high-lying eigenstates, starting at about 1.000.000th eigenstate and including the…

Chaotic Dynamics · Physics 2013-07-05 Benjamin Batistić , Marko Robnik

We investigate the classical scattering dynamics of the driven elliptical billiard. Two fundamental scattering mechanisms are identified and employed to understand the rich behavior of the escape rate. A long-time algebraic decay which can…

Chaotic Dynamics · Physics 2009-11-13 Florian Lenz , Fotis K. Diakonos , Peter Schmelcher

The article studies a generalization of the elliptic billiard to the complex domain. We show that the billiard orbits also have caustics, and that the number of such caustics is bigger than for the real case. For example, for a given…

Dynamical Systems · Mathematics 2020-02-25 Corentin Fierobe

Streamlines and distributions of nodal points are used as signatures of chaos in coherent electron transport through three types of billiards, Sinai, Bunimovich and rectangular. Numerical averaged distribution functions of nearest distances…

We discuss the propagation of kinetic energy through billiard balls fixed in place along a one-dimensional segment. The number of billiard balls is assumed to be large but finite and we assume kinetic energy propagates following the usual…

Mathematical Physics · Physics 2025-12-02 Krzysztof Burdzy , Jeremy G. Hoskins , Stefan Steinerberger

We discuss the interplay between the piece-line regular and vertex-angle singular boundary effects, related to integrability and chaotic features in rational polygonal billiards. The approach to controversial issue of regular and irregular…

Mathematical Physics · Physics 2008-04-24 Valery B. Kokshenev

We suggest that random matrix theory applied to a classical action matrix can be used in classical physics to distinguish chaotic from non-chaotic behavior. We consider the 2-D stadium billiard system as well as the 2-D anharmonic and…

We construct Birkhoff cones for dispersing billiards, which are contracted by the action of the transfer operator. This construction permits the study of statistical properties not only of regular dispersing billiards but also of sequential…

Dynamical Systems · Mathematics 2023-07-05 Mark F. Demers , Carlangelo Liverani

Random-matrix theory is used to show that the proximity to a superconductor opens a gap in the excitation spectrum of an electron gas confined to a billiard with a chaotic classical dynamics. In contrast, a gapless spectrum is obtained for…

Condensed Matter · Physics 2016-08-31 J. A. Melsen , P. W. Brouwer , K. M. Frahm , C. W. J. Beenakker

Quantum billiards are a key focus in quantum mechanics, offering a simple yet powerful model to study complex quantum features. While the development of algebras for quantum systems is traced from one-dimensional integrable models to…

Chaotic Dynamics · Physics 2025-08-06 A. C. Maioli , E. M. F. Curado

We study quantum-mechanical tunneling between symmetry-related pairs of regular phase space regions that are separated by a chaotic layer. We consider the annular billiard, and use scattering theory to relate the splitting of…

Condensed Matter · Physics 2009-10-28 Eyal Doron , Steffen D. Frischat

We show that the complexity of the billiard in a typical polygon grows cubically and the number of saddle connections grows quadratically along certain subsequences. It is known that the set of points whose first n-bounces hits the same…

Dynamical Systems · Mathematics 2023-12-08 Tyll Krueger , Arnaldo Nogueira , Serge Troubetzkoy

The purpose of this paper is to compare a classical non-holonomic system---a sphere rolling against the inner surface of a vertical cylinder under gravity---and a class of discrete dynamical systems known as no-slip billiards in similar…

Dynamical Systems · Mathematics 2020-03-19 Timothy Chumley , Scott Cook , Christopher Cox , Renato Feres

The coherent tunneling phenomenon is investigated in rectangular billiards divided into two domains by a classically unclimbable potential barrier. We show that by placing a pointlike scatterer inside the billiard, we can control the…

chao-dyn · Physics 2016-08-31 Taksu Cheon , T. Shigehara

\textsc{J. Hadamard} studied the geometric properties of geodesic flows on surfaces of negative curvature, thus initiating "Symbolic Dynamics". In this article, we follow the same geometric approach to study the geodesic trajectories of…

Dynamical Systems · Mathematics 2021-12-10 Anima Nagar , Pradeep Singh

The stability properties of the classical trajectories of charged particles are investigated in a two dimensional stadium-shaped inverse magnetic domain, where the magnetic field is zero inside the stadium domain and constant outside. In…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Zoltán Vörös , Tamás Tasnádi , József Cserti , Péter Pollner