Abstract
We unify recent Noether-type theorems on the equivalence of symmetries with conservation laws for dynamical systems of Markov processes, of quantum operations, and of quantum stochastic maps, by means of some abstract results on propagation of fixed points for completely positive maps on \(C^*\)-algebras. We extend most of the existing results with characterisations in terms of dual infinitesimal generators of the corresponding strongly continuous one-parameter semigroups. By means of an ergodic theorem for dynamical systems of completely positive maps on von Neumann algebras, we show the consistency of the condition on the standard deviation for dynamical systems of quantum operations, and hence of quantum stochastic maps as well, in case the underlying Hilbert space is infinite dimensional.
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Work supported by the grant PN-III-P4-ID-PCE-2016-0823 Dynamics and Differentiable Ergodic Theory from UEFISCDI, Romania.
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Communicated by Claude Alain Pillet.
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Gheondea, A. Symmetries Versus Conservation Laws in Dynamical Quantum Systems: A Unifying Approach Through Propagation of Fixed Points. Ann. Henri Poincaré 19, 1787–1816 (2018). https://doi.org/10.1007/s00023-018-0666-6
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DOI: https://doi.org/10.1007/s00023-018-0666-6