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19972018
most citedA review of progress in the physics of open quantum systems: theory and experiment

253 citations · 1.1k across the 36 of their papers we have counts for

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quant-ph2000

Branch points in the complex plane and information loss in quantum systems at high level density

I. Rotter

The mechanism of avoided level crossings in quantum systems is studied. It is traced back to the existence of branch points in the complex plane which influence the properties of r…