The paper defines open-system discrete time crystals via the Floquet propagator spectrum and shows subharmonic oscillations in a microscopically derived, short-range interacting XY chain with collective decay.
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3 Pith papers cite this work, alongside 137 external citations. Polarity classification is still indexing.
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Quasi-periodic driving of a four-level system creates temporal analogs of quantum spin Hall and higher-order topological insulators, yielding quantized energy exchange rates between drives due to synthetic edge or corner modes.
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Time crystallinity in open quantum systems
The paper defines open-system discrete time crystals via the Floquet propagator spectrum and shows subharmonic oscillations in a microscopically derived, short-range interacting XY chain with collective decay.
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Topological energy pumping in a quasi-periodically driven four-level system
Quasi-periodic driving of a four-level system creates temporal analogs of quantum spin Hall and higher-order topological insulators, yielding quantized energy exchange rates between drives due to synthetic edge or corner modes.
- Quantum many-body scars leading to time-translation symmetry breaking in kicked interacting spin models