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There is an ongoing effort to quantify entanglement of quantum pure states for systems with more than two subsystems. We consider three approaches to this problem for three-qubit states: choosing a basis which puts the state into a standard form, enumerating ''local invariants'', and using operational quantities such as the number of maximally entangled states which can be distilled. In this Letter...
Quantum chaos - the study of quantized nonintegrable Hamiltonian systems - is an extremely well-developed and sophisticated field. By contrast, very little work has been done in looking at quantum versions of systems which classically exhibit dissipative chaos. Using the decoherence formalism of Gell-Mann and Hartle, I find a quantum mechanical analog of one such system, the forced damped Duffing...
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