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We present a classical and quantum mechanical study of an Andreev billiard with a chaotic normal dot. We demonstrate that in general the classical dynamics of these normal-superconductor hybrid systems is mixed, thereby indicating the…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 A. Kormanyos , Z. Kaufmann , J. Cserti , C. J. Lambert

Billiards tables - a minimal model for particles moving in a confined region - are known to present classical (and quantum) different features according to their shape, ranging from strongly chaotic to integrable dynamics. Here we consider…

Chaotic Dynamics · Physics 2026-05-13 Roberto Artuso , Matteo Burlo

We investigate the two-point correlations in the band spectra of spatially periodic systems that exhibit chaotic diffusion in the classical limit. By including level pairs pertaining to non-identical quasimomenta, we define form factors…

chao-dyn · Physics 2009-10-30 T. Dittrich , B. Mehlig , H. Schanz , U. Smilansky

This paper is part I of a series in which we aim to show that the singular support of the wave trace and the length spectrum of a smooth, strictly convex, and bounded planar billiard table are generally distinct objects. We derive an…

Spectral Theory · Mathematics 2024-04-04 Vadim Kaloshin , Illya Koval , Amir Vig

We study the ensemble-averaged conductance as a function of applied magnetic field for ballistic electron transport across few-channel microstructures constructed in the shape of classically chaotic billiards. We analyse the results of…

Condensed Matter · Physics 2015-06-25 Z. Pluhar , H. A. Weidenmueller , J. A. Zuk , C. H. Lewenkopf

The geometry of a billiard boundary fundamentally governs its dynamics, ranging from integrable to mixed and fully chaotic regimes. Bean- and peanut-shaped billiards have varying curvature with both focusing and defocusing walls without a…

Chaotic Dynamics · Physics 2026-05-07 Pranaya Pratik Das , Tanmayee Patra , Biplab Ganguli

We design a computational experiment in which a quantum particle tunnels into a billiard of variable shape and scatters out of it through a double-slit opening on the billiard's base. The interference patterns produced by the scattered…

Chaotic Dynamics · Physics 2015-05-19 Zoran Levnajić , Tomaž Prosen

We introduce and investigate billiard systems with an adjusted ray dynamics that accounts for modifications of the conventional reflection of rays due to universal wave effects. We show that even small modifications of the specular…

Optics · Physics 2008-09-19 Eduardo G. Altmann , Gianluigi Del Magno , Martina Hentschel

We study the dielectric annular billiard as a quantum chaotic model of a micro-optical resonator. It differs from conventional billiards with hard-wall boundary conditions in that it is partially open and composed of two dielectric media…

Optics · Physics 2009-11-07 Martina Hentschel , Klaus Richter

The Loschmidt echo (LE) measures the ability of a system to return to the initial state after a forward quantum evolution followed by a backward perturbed one. It has been conjectured that the echo of a classically chaotic system decays…

Chaotic Dynamics · Physics 2009-11-07 Diego A. Wisniacki , Eduardo Vergini , Horacio M. Pastawski , Fernando M. Cucchietti

We assume that the level spectra of quantum systems in the initial phase of transition from integrability to chaos are approximated by superpositions of independent sequences. Each individual sequence is modeled by a random matrix ensemble.…

Statistical Mechanics · Physics 2009-07-14 A. Y. Abul-Magd

We report on the numerical simulation of the double-slit experiment, where the initial wave-packet is bounded inside a billiard domain with perfectly reflecting walls. If the shape of the billiard is such that the classical ray dynamics is…

Chaotic Dynamics · Physics 2009-11-10 Giulio Casati , Tomaz Prosen

We extend the application of the concept of structural invariance to bounded time independent systems. This concept, previously introduced by two of us to argue that the connection between random matrix theory and quantum systems with a…

chao-dyn · Physics 2009-10-31 F. Leyvraz , R. A. Mendez-Sanchez , T. H. Seligman

In the present note, we uncover a remarkable connection between the length of periodic orbit of a classical particle enclosed in a class of 2-dimensional planar billiards and the energy of a quantum particle confined to move in an identical…

Quantum Physics · Physics 2018-08-15 Subhasis Panda , Sabyasachi Maulik , Somdeb Chakraborty , S. Pratik Khastgir

Resonance states of the 3-disk scattering system are presented for the first Casati wave number $k \approx 912$ and the second Casati wave number $k \approx 91242$. They show multifractal structure in phase space, similar to the pioneering…

Chaotic Dynamics · Physics 2022-12-12 Roland Ketzmerick , Jan Robert Schmidt

Non-generic contributions to the quantal level-density from parallel segments in billiards are investigated. These contributions are due to the existence of marginally stable families of periodic orbits, which are structurally unstable, in…

chao-dyn · Physics 2009-10-22 Harel Primack , Uzy Smilansky

The purpose of this article is to develop a Hadamard-Riesz type parametrix for the wave propagator in bounded planar domains with smooth, strictly convex boundary. This parametrix then allows us to rederive an oscillatory integral…

Analysis of PDEs · Mathematics 2022-08-03 Amir Vig

We report non-invasive measurements of the complex field of elastic quasimodes of a silicon wafer with chaotic shape. The amplitude and phase spatial distribution of the flexural modes are directly obtained by Fourier transform of time…

Other Condensed Matter · Physics 2009-09-07 Olivier Xeridat , Charles Poli , Olivier Legrand , Fabrice Mortessagne , Patrick Sebbah

The diffraction trace formula ({\em Phys. Rev. Lett.} {\bf 73}, 2304 (1994)) and spectral determinant are tested on the open three disk scattering system. The system contains a generic and exponentially growing number of diffraction…

chao-dyn · Physics 2008-02-03 Per E. Rosenqvist , Gabor Vattay , Andreas Wirzba

We demonstrate the presence of parity-time (PT) symmetry for the non-Hermitian two-state Hamiltonian of a dissipative microwave billiard in the vicinity of an exceptional point (EP). The shape of the billiard depends on two parameters. The…

Quantum Physics · Physics 2012-01-12 S. Bittner , B. Dietz , U. Guenther , H. L. Harney , M. Miski-Oglu , A. Richter , F. Schaefer