Physics – Quantum Physics
Scientific paper
2008-03-11
Physics
Quantum Physics
24 pages, 12 figures
Scientific paper
We use the semiclassical method proposed in \cite{Adelcio2003} to study scalar products such as the overlap, Husimi functions and fidelity decay. Scars of classical periodic orbits arise naturally in this pertubative expansion. We also derive analytically a well known numerical result that fidelity has a quadratic decay for short times. We study the overlap in the chaotic regime and integrable for some simple systems.
Oliveira Adelcio C.
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