Point-gap topology of stochastic matrices characterizes both directed transport and feedback-induced non-Markovianity in classical stochastic processes, with a topological quantum simulation of the latter.
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Source-target entanglement in quantum walks on arbitrary networks is upper-bounded by connectivity, with graph matchings controlling its generation and higher connectivity reducing the maximum in random graphs.
Hybridization of dissipative Kerr solitons forms coherent structures in both supermodes of coupled microresonators via four-wave mixing, yielding flat spectra near the pump and oscillatory wings.
A topological word framework unifies non-Abelian bulk-boundary correspondence by encoding gap-resolved charges and band adjacency in a sequence, applicable even when global topology is ill-defined.
Rank deficiency of local Hamiltonians in classically fragmented models generates entangled frozen states, splitting mobile sectors into quantum Krylov subspaces and frozen entangled parts, with weak and strong quantum fragmentation distinguished by the number and ergodicity of irreducible blocks.
Transient offset backscattering peak observed in short-time dynamics of spin-1/2 particles in 2D disordered potentials with uniform SU(2) gauge fields, explained by non-Abelian gauge transformation with perturbative prediction of dephasing time.
Measurement-based quantum diffusion models are introduced to recover pure and mixed quantum states via weak measurements, quantum score matching, and Petz recovery maps with error bounds, bridging to classical stochastic reversals.
Adding a continuous bond energy ε to 2D site percolation shifts the threshold smoothly and drives the correlation-length exponent ν from 1/2 through 4/3 to 1, as shown by Monte Carlo simulations and real-space RG that also reveal an energy-weighted correlation length and antiferromagnetic ordering,
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.
A scheme using modulated Raman pulses achieves spin-dependent kick infidelities below 10^{-5} in trapped ions despite micromotion by optimizing RF parameters to cancel backward kicks.
DMRG simulations show a doublon-holon paired phase with d-wave symmetry emerging between spin-singlet, CDW, and eta-pairing phases in photodoped Mott insulators.
Substrate commensuration induces intervalley coupling in TBG, hybridizing flat bands into a p_x-p_y honeycomb model with quadratic touchings that flatten due to frustration and yield topological bands with C up to 4.
LIGO-Virgo-KAGRA O4a data yields the strongest constraints on primordial black hole abundance for 0.6-100 solar masses, with resolvable mergers dominating the limits and no compelling evidence for a PBH contribution in joint fits with astrophysical black holes.
Electric-field shifting of the d-level energy switches the magnetic ground state of an itinerant-electron dimer among ferromagnetic, antiferromagnetic, and noncollinear configurations.
Resistivity measurements show angle-dependent enhancement of the Fermi-liquid coefficient A at the metamagnetic transition that coincides with the onset of superconductivity in the polarized regime above 40 T, interpreted as evidence for boosted quantum-critical magnetic fluctuations.
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Constraints on primordial black holes from the first part of LIGO-Virgo-KAGRA fourth observing run
LIGO-Virgo-KAGRA O4a data yields the strongest constraints on primordial black hole abundance for 0.6-100 solar masses, with resolvable mergers dominating the limits and no compelling evidence for a PBH contribution in joint fits with astrophysical black holes.