Reversibility of dynamics and multiple-quantum coherences
classification
🪐 quant-ph
cond-mat.stat-mechmath.DS
keywords
coherencesdynamicsevolutionmultiple-quantumreversibilitysystemsanalyzedapproach
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In spin systems, the decay of the Loschmidt echo in the time-reversal experiment (evolution, perturbation, time-reversed evolution) is linked to the generation of multiple-quantum coherences. The approach is extended to other systems, and the general problem of reversibility of quantum dynamics is analyzed.
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