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Positivity of the Spectral Densities of Retarded Floquet Green Functions

Götz S Uhrig1, Mona H Kalthoff1, James K Freericks2

  • 1Lehrstuhl für Theoretische Physik I, Technische Universität Dortmund, Otto-Hahn Straße 4, 44221 Dortmund, Germany.

Physical Review Letters
|April 24, 2019
PubMed

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