Spectral functions and negative density of states of a driven-dissipative nonlinear quantum resonator
We study the spectral properties of Markovian driven-dissipative quantum systems, focusing on the nonlinear quantum van der Pol oscillator as a paradigmatic example. We discuss a generalized Lehmann representation, in which single-particle Green's functions are expressed in terms of the eigenst...
Main Authors: | Scarlatella, O, Clerk, A, Schiro, M |
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Format: | Journal article |
Published: |
IOP Publishing
2019
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