[1402.1093] Quantum Systems Equilibrate Rapidly for Most Observables

[1402.1093] Quantum Systems Equilibrate Rapidly for Most Observables:



 "Given any Hamiltonian and any initial state spread over many discrete energy levels, we show that most observables are already equlibrated, and that most observables with a definite initial value (which are typically initially out of equilibrium) equilibrate fast. Moreover, all two-outcome measurements, where one of the projectors is of low rank, equilibrate fast."



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