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Wow, could I have walked in and looked at myself virtualized??? Go Back To your homes This video was shot at 15th And Mission as I was about to get a free tour. With every eyeball in the world watching, wow such fun Mr. Obama. Quantum chaos is a branch of physics which studies how chaotic classical systems (see dynamical systems and chaos theory) can be shown to be limits of quantum-mechanical systems.[1][2][3] The phenomena covered by quantum chaos so far are mainly related to wave theory. An alternative name, proposed by Sir Michael Berry, is quantum chaology.[4] Michael Berry argues that there is no quantum chaos, in the sense of exponential sensitivity to initial conditions, but there are several novel quantum phenomena which reflect the presence of classical chaos. The primary question that quantum chaos seeks to answer is, "What is the relationship between quantum mechanics and classical chaos?" The correspondence principle states that classical mechanics is a special case of quantum mechanics, the classical limit. If this is true, then there must be quantum mechanisms underlying classical chaos. If quantum mechanics does not demonstrate an exponential sensitivity to initial conditions, how can exponential sensitivity to initial conditions arise in classical chaos, which must be the correspondence principle limit of quantum mechanics? The veracity of non-classical theories depends on their ability to reproduce the same results as classical mechanics in the classical limit, so this remains a significant question regarding quantum mechanics.[5][6] In seeking to address the basic question of quantum chaos, several approaches have been employed: 1. Development of methods for solving quantum problems where the perturbation cannot be considered small in perturbation theory (quantum mechanics) and where quantum numbers are large. 2. Correlating statistical descriptions of eigenvalues (energy levels) with the classical behavior of the same Hamiltonian (system). 3. Semiclassical methods such as periodic-orbit theory connecting the classical trajectories of the dynamical system with quantum features. 4. Direct application of the correspondence principle. Contents [hide] 1 History 2 Approaches 3 Quantum Mechanics in Non-Perturbative Regimes