Floquet strong Hilbert space fragmentation stabilizes discrete time crystals in a disorder-free kicked XXZ spin chain, with lifetime independent of frequency and exponential in system size.
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At special drive frequencies, the leading perturbative Floquet Hamiltonian of a driven Rydberg chain maps to the XXZ model, producing emergent prethermal integrability confirmed by level statistics and entanglement in exact diagonalization.
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Discrete time crystals enabled by Floquet strong Hilbert space fragmentation
Floquet strong Hilbert space fragmentation stabilizes discrete time crystals in a disorder-free kicked XXZ spin chain, with lifetime independent of frequency and exponential in system size.
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Emergent prethermal Bethe integrability in a periodically driven Rydberg chain
At special drive frequencies, the leading perturbative Floquet Hamiltonian of a driven Rydberg chain maps to the XXZ model, producing emergent prethermal integrability confirmed by level statistics and entanglement in exact diagonalization.