Dynamical quantum phase transitions in the reduced Loschmidt echo persist under purely gain or loss dissipation but are completely smeared by any combination of both channels, even when one is infinitesimal.
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cond-mat.stat-mech 2years
2025 2verdicts
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The ν-QSSEP model generalizes QSSEP with spatially structured noise; for ν=1 entanglement dynamics follows a stochastic quasiparticle picture yielding diffusive growth.
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Smearing of dynamical quantum phase transitions in dissipative free-fermion systems
Dynamical quantum phase transitions in the reduced Loschmidt echo persist under purely gain or loss dissipation but are completely smeared by any combination of both channels, even when one is infinitesimal.
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$\nu$-QSSEP: A toy model for entanglement spreading in stochastic diffusive quantum systems
The ν-QSSEP model generalizes QSSEP with spatially structured noise; for ν=1 entanglement dynamics follows a stochastic quasiparticle picture yielding diffusive growth.