Zeno dynamics yields ordinary constraints

Physical Review A (Impact Factor: 2.99). 01/2001; DOI: 10.1103/PhysRevA.65.012108
Source: arXiv

ABSTRACT The dynamics of a quantum system undergoing frequent measurements (quantum Zeno effect) is investigated. Using asymptotic analysis, the system is found to evolve unitarily in a proper subspace of the total Hilbert space. For spatial projections, the generator of the "Zeno dynamics" is the Hamiltonian with Dirichlet boundary conditions. Comment: 6 pages

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