Lossless information transfer along the causal lightcone in brickwork quantum circuits is enabled by peripheral eigenvalues of the M-qudit channel Φ_M, with examples for arbitrary N even in nonintegrable thermalising dynamics.
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Floquet circuits can be built to host many-body cages that carry topological features and π-quasienergy modes, producing time-crystalline spatiotemporal order in models such as the quantum hard disk.
An optimized pair-hopping term derived via third-order Schrieffer-Wolff transformation suppresses doublon transport through destructive interference, producing near-complete dynamical arrest in 1D and prethermal density-wave order in the many-body regime.
Under Floquet ETH, the trace distance between energy-filtered and thermal states is bounded by O(√δ), where δ is the filter width.
EPU-invariant N-qudit states have k-qudit marginals close to mixtures of thermal (Gibbs) states, with explicit ~kd/N error bounds.
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.
citing papers explorer
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Information transfer along the causal lightcone of a brickwork quantum circuit
Lossless information transfer along the causal lightcone in brickwork quantum circuits is enabled by peripheral eigenvalues of the M-qudit channel Φ_M, with examples for arbitrary N even in nonintegrable thermalising dynamics.
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Floquet Many-Body Cages
Floquet circuits can be built to host many-body cages that carry topological features and π-quasienergy modes, producing time-crystalline spatiotemporal order in models such as the quantum hard disk.
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Interference-Induced Suppression of Doublon Transport and Prethermalization in the Extended Bose-Hubbard Model
An optimized pair-hopping term derived via third-order Schrieffer-Wolff transformation suppresses doublon transport through destructive interference, producing near-complete dynamical arrest in 1D and prethermal density-wave order in the many-body regime.
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How thermal is a filtered state?
Under Floquet ETH, the trace distance between energy-filtered and thermal states is bounded by O(√δ), where δ is the filter width.
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Symmetry-driven thermalization via finite de Finetti theorems
EPU-invariant N-qudit states have k-qudit marginals close to mixtures of thermal (Gibbs) states, with explicit ~kd/N error bounds.
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Hybrid quantum-classical matrix-product state and Lanczos methods for electron-phonon systems with strong electronic correlations: Application to disordered systems coupled to Einstein phonons
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.