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Journal Article

Scar functions in the Bunimovich stadium billiard


Carlo,  G. G.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Carlo, G. G., Vergini, E. G., & Lustemberg, P. (2002). Scar functions in the Bunimovich stadium billiard. Journal of Physics A-Mathematical and General, 35(38), 7965-7982. Retrieved from http://www.iop.org/EJ/toc/0305-4470/35/38.

Cite as: http://hdl.handle.net/11858/00-001M-0000-002B-36E9-9
In the context of the semiclassical theory of short periodic orbits, scar functions play a crucial role. These wavefunctions live in the neighbourhood of the trajectories, resembling the hyperbolic structure of the phase space in their immediate vicinity. This property makes them extremely suitable for investigating chaotic eigenfunctions. On the other hand, for all practical purposes reductions to Poincare sections become essential. Here we give a detailed explanation of resonance and scar function construction in the Bunimovich stadium billiard and the corresponding reduction to the boundary. Moreover, we develop a method that takes into account the departure of the unstable and stable manifolds from the linear regime. This new feature extends the validity of the expressions.