In XX spin chains with open boundaries, a local quench via a single-spin impurity prevents thermalization and produces a strong violation of the eigenstate thermalization hypothesis, including its weak version.
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Srednicki, Chaos and quantum thermalization, Phys
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External electric fields in 3D U(1) quantum dimer models with staggered matter induce geometric fragmentation, weak fragmentation, and fractonic excitations in large winding sectors, producing anomalous thermalization.
Measurement-induced entanglement in Tomonaga-Luttinger liquids is universal, conformally invariant, and arises from Born-rule averaging over conformally invariant boundary conditions in the CFT.
A new quantum dynamical entropy rate for mesoscopic monitoring is computed exactly from two-point functions and is conjectured to obey a universal Planckian bound.
The interacting Anderson Quantum Sun model exhibits unconventional regimes featuring volume-law entanglement with intermediate spectral statistics and Poisson statistics with sub-volume entanglement growth.
Thermalization time in a boundary-coupled 1D chain with approximate pair-flip constraints scales exponentially with system size due to configuration-space bottlenecks.
Interference-protected subspaces in chaotic spin chains host broad nonthermal phenomena at high energy densities, explained by a quantitative leakage theory that extends weak ergodicity breaking beyond homogeneous scars.
In a dipole-conserving Bose-Hubbard chain, weak Hilbert-space fragmentation permits thermalization at weak interactions but yields nonergodicity at strong interactions, shown via analytical bounds on frozen states and exact diagonalization of entanglement, relaxation, and level statistics.
Energy-space quantum walks separate classical population equilibration to Gibbs statistics from persistent quantum coherence that prevents full state convergence to the thermal manifold.
Quantum dynamics in the Bose-Hubbard model remains trapped in symmetry-breaking sectors above the first excited-state quantum phase transition while classical dynamics exhibits intermittency, producing robust finite-size effects and slow thermalization even at large particle numbers.
Rydberg atoms in a Stark manifold prepared in the center generally fail to reach the dynamical-typicality thermal distribution across tested densities, approaching it only at the highest density.
Quantum many-body scars in the PXP model display extensive ergotropy that scales with system size and can be charged via coherent rotation resets, enabling their use for quantum many-body batteries.
A toolbox for controlling dynamical phase transitions and non-ergodic relaxation in spinor gases via spinor phases, including phase extraction from population dynamics and single-trace interaction inference.
Granovskii-Zhedanov scar states in XYZ models are described via spectrum-generating algebra with perturbative and optimized constructions, and lattice-independent versions exist only on specific uniform and non-uniform higher-dimensional lattices.
Energy eigenstates in SU(2)-symmetric quantum many-body systems obey a KMS relation whose finite-size correction scales as usual or polynomially larger depending on circumstances, supported by numerics on small Heisenberg chains.
Reports signature of arrested prethermal relaxation in NO ultracold plasma blocked by high-l Rydberg gap, with local RF or state excitation driving global equilibration via dissipation.
A quantum computer implemented a quantum disease spreading model with up to 73 sites and 72 layers, enabling quantitative measurement of its non-equilibrium phase transition critical properties.
Random matrix analysis of Z2-symmetric centrosymmetric ensembles shows thermalization of local observables to canonical averages occurs regardless of initial-state symmetry, while symmetry-violating observables have equilibrium values independent of initial symmetry.
In a driven non-integrable Ising chain, subsystem reduced density matrices and work statistics both detect the frequency-dependent crossover from prethermal to infinite-temperature Floquet regimes.
Exact diagonalization study of trapped bosons finds that stronger interactions and added rotation drive eigenstate delocalization in Fock space, with IPR dropping and Shannon plus von Neumann entropies rising consistently.
Numerical method using quadratic fermionic Hamiltonians and Peschel correlation functions is applied to a single-mode quantum heat valve with comparisons to exact analytical results.
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Absence of thermalization after a local quench and strong violation of the eigenstate thermalization hypothesis
In XX spin chains with open boundaries, a local quench via a single-spin impurity prevents thermalization and produces a strong violation of the eigenstate thermalization hypothesis, including its weak version.
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Geometric fragmentation and anomalous thermalization in cubic dimer model
External electric fields in 3D U(1) quantum dimer models with staggered matter induce geometric fragmentation, weak fragmentation, and fractonic excitations in large winding sectors, producing anomalous thermalization.
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Measurement-Induced Entanglement in Conformal Field Theory
Measurement-induced entanglement in Tomonaga-Luttinger liquids is universal, conformally invariant, and arises from Born-rule averaging over conformally invariant boundary conditions in the CFT.
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Planckian bound on quantum dynamical entropy
A new quantum dynamical entropy rate for mesoscopic monitoring is computed exactly from two-point functions and is conjectured to obey a universal Planckian bound.
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Unconventional Thermalization of a Localized Chain Interacting with an Ergodic Bath
The interacting Anderson Quantum Sun model exhibits unconventional regimes featuring volume-law entanglement with intermediate spectral statistics and Poisson statistics with sub-volume entanglement growth.
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Exponentially slow thermalization and the robustness of Hilbert space fragmentation
Thermalization time in a boundary-coupled 1D chain with approximate pair-flip constraints scales exponentially with system size due to configuration-space bottlenecks.
-
Coherent dynamics in chaotic spin chains via interference-protected subspaces
Interference-protected subspaces in chaotic spin chains host broad nonthermal phenomena at high energy densities, explained by a quantitative leakage theory that extends weak ergodicity breaking beyond homogeneous scars.
-
Weak Fragmentation and Thermalization in a Dipole-Conserving Bose-Hubbard Chain
In a dipole-conserving Bose-Hubbard chain, weak Hilbert-space fragmentation permits thermalization at weak interactions but yields nonergodicity at strong interactions, shown via analytical bounds on frozen states and exact diagonalization of entanglement, relaxation, and level statistics.
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Energy-space quantum walks: Thermalization without state convergence
Energy-space quantum walks separate classical population equilibration to Gibbs statistics from persistent quantum coherence that prevents full state convergence to the thermal manifold.
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Chaos, thermalization and breakdown of quantum-classical correspondence in a collective many-body system
Quantum dynamics in the Bose-Hubbard model remains trapped in symmetry-breaking sectors above the first excited-state quantum phase transition while classical dynamics exhibits intermittency, producing robust finite-size effects and slow thermalization even at large particle numbers.
-
Thermalization within a Stark manifold through Rydberg atom interactions
Rydberg atoms in a Stark manifold prepared in the center generally fail to reach the dynamical-typicality thermal distribution across tested densities, approaching it only at the highest density.
-
Ergotropy of quantum many-body scars
Quantum many-body scars in the PXP model display extensive ergotropy that scales with system size and can be charged via coherent rotation resets, enabling their use for quantum many-body batteries.
-
Control of dynamical phase transitions and non-ergodic relaxation via spinor phases
A toolbox for controlling dynamical phase transitions and non-ergodic relaxation in spinor gases via spinor phases, including phase extraction from population dynamics and single-trace interaction inference.
-
Granovskii-Zhedanov Scars of XYZ Models: Modern Algebraic Perspectives and Realization in Higher Dimensional Lattices
Granovskii-Zhedanov scar states in XYZ models are described via spectrum-generating algebra with perturbative and optimized constructions, and lattice-independent versions exist only on specific uniform and non-uniform higher-dimensional lattices.
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Kubo-Martin-Schwinger relation for energy eigenstates of SU(2)-symmetric quantum many-body systems
Energy eigenstates in SU(2)-symmetric quantum many-body systems obey a KMS relation whose finite-size correction scales as usual or polynomially larger depending on circumstances, supported by numerics on small Heisenberg chains.
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Dynamical control in a prethermalized molecular ultracold plasma: Local dissipation drives global relaxation
Reports signature of arrested prethermal relaxation in NO ultracold plasma blocked by high-l Rydberg gap, with local RF or state excitation driving global equilibration via dissipation.
-
Characterizing a non-equilibrium phase transition on a quantum computer
A quantum computer implemented a quantum disease spreading model with up to 73 sites and 72 layers, enabling quantitative measurement of its non-equilibrium phase transition critical properties.
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Spectral statistics, non-equilibrium dynamics and thermalization in random matrices with global $\mathbb{Z}_2$-symmetry
Random matrix analysis of Z2-symmetric centrosymmetric ensembles shows thermalization of local observables to canonical averages occurs regardless of initial-state symmetry, while symmetry-violating observables have equilibrium values independent of initial symmetry.
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Subsystem Thermalization and Work Statistical Characterizations of Floquet Dynamics
In a driven non-integrable Ising chain, subsystem reduced density matrices and work statistics both detect the frequency-dependent crossover from prethermal to infinite-temperature Floquet regimes.
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Interaction-rotation driven localization-delocalization of eigenstate in Fock space: An exact diagonalization study on trapped Bose gas
Exact diagonalization study of trapped bosons finds that stronger interactions and added rotation drive eigenstate delocalization in Fock space, with IPR dropping and Shannon plus von Neumann entropies rising consistently.
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Quadratic Hamiltonian approach to heat transport in fermionic systems
Numerical method using quadratic fermionic Hamiltonians and Peschel correlation functions is applied to a single-mode quantum heat valve with comparisons to exact analytical results.