Local Boolean kinetic constraints added to Dicke superradiance generate extensive mixed-state entanglement and a hierarchy of long-range entangled singlet dark states while retaining superradiant N^2 scaling.
Polkovnikov, Phase space representation of quantum dynamics, Annals of Physics325, 1790 (2010)
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Variational perturbation theory extends the radius of convergence for steady-state calculations in open quantum systems and replaces pseudo-inverse computations with LU decomposition or Krylov recycling.
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Hybrid Lanczos and MPS methods with classical Ehrenfest phonons provide numerical evidence that electron-phonon coupling delocalizes strongly disordered systems and destabilizes finite-size many-body localization.
Stochastic feedback controls the kicked top across regimes, with semiclassical methods capturing low moments while quantum effects appear in higher moments, and control causes rapid purification that quenches qubit encoding even without control.
In a Holstein-Tavis-Cummings model, disorder induces robust non-Gaussian vibrational states in large ensembles that semiclassical approximations fail to capture.
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In a Holstein-Tavis-Cummings model, disorder induces robust non-Gaussian vibrational states in large ensembles that semiclassical approximations fail to capture.