A diagrammatic Monte Carlo framework computes fermionic Rényi entanglement entropies order-by-order on large lattices via graded-swap representation and connected-determinant summation.
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An exactly solvable model of a quantum chain coupled to a cavity photon via dipole interaction yields a closed-form reduced density matrix that reveals logarithmic light-matter and spatial entanglement scaling with system size at strong coupling, arising from photon resolution of collective dipole P
Analytic computation of logarithmic negativity and closed-form negativity cores for vacuum entanglement between two bounded regions in 1+1D free massless scalar QFT.
Structure-aware VQE ansatze for long-range Ising models cut required circuit layers by 2.5x to 3.8x in non-local regimes while two-qubit gate counts scale quadratically with system size, consistent with the number of Hamiltonian terms.
Momentum-space entanglement entropy reaches ln 2 at DQPTs via exact degeneracy p=1/2 in the post-quench eigenbasis, providing a time-independent diagnostic.
Interactions in the generalized SSH model produce interacting SPT phases, a sublattice-density-breaking phase, CDW phases, Luttinger liquids, and a gapless SPT phase with protected edge states.
A QMC-based framework tests the lattice-Bisognano-Wichmann ansatz for reconstructing entanglement Hamiltonians in 2D systems without Lorentz invariance or translational symmetry, finding good accuracy for ordinary boundaries.
Exact reduced density matrix for free real scalar field on finite interval, with explicit entanglement Hamiltonian results in massless limit and mass-dependent corrections.
In the variable-range Ising model, correlations are algebraic up to distance Z then exponential, while entanglement scales as Z^{-γ} at criticality independent of partition size and α>1.
Derives conditions for TEE probes, generalizes cyclic and multi-information quantities, and verifies holographic entropy inequalities for gapped topological states.
A family of positive but not completely positive maps on 4D space is constructed and applied to detect bound entanglement in 4⊗4 systems.
citing papers explorer
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Diagrammatic Monte Carlo for Fermionic R\'enyi Entanglement Entropy
A diagrammatic Monte Carlo framework computes fermionic Rényi entanglement entropies order-by-order on large lattices via graded-swap representation and connected-determinant summation.
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Logarithmic Entanglement and Emergent Dipole Symmetry from a Strongly Coupled Light-Matter Quantum Circuit
An exactly solvable model of a quantum chain coupled to a cavity photon via dipole interaction yields a closed-form reduced density matrix that reveals logarithmic light-matter and spatial entanglement scaling with system size at strong coupling, arising from photon resolution of collective dipole P
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The negativity core of a 1+1D massless scalar quantum field
Analytic computation of logarithmic negativity and closed-form negativity cores for vacuum entanglement between two bounded regions in 1+1D free massless scalar QFT.
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Scaling of Quantum Resources for Simulating a Long-Range System
Structure-aware VQE ansatze for long-range Ising models cut required circuit layers by 2.5x to 3.8x in non-local regimes while two-qubit gate counts scale quadratically with system size, consistent with the number of Hamiltonian terms.
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Critical Entanglement Dynamics at Dynamical Quantum Phase Transitions
Momentum-space entanglement entropy reaches ln 2 at DQPTs via exact degeneracy p=1/2 in the post-quench eigenbasis, providing a time-independent diagnostic.
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Quantum phases in the interacting generalized Su-Schrieffer-Heeger model
Interactions in the generalized SSH model produce interacting SPT phases, a sublattice-density-breaking phase, CDW phases, Luttinger liquids, and a gapless SPT phase with protected edge states.
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Exploring the limit of the Lattice-Bisognano-Wichmann form describing the Entanglement Hamiltonian: A quantum Monte Carlo study
A QMC-based framework tests the lattice-Bisognano-Wichmann ansatz for reconstructing entanglement Hamiltonians in 2D systems without Lorentz invariance or translational symmetry, finding good accuracy for ordinary boundaries.
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Reduced density matrix and entanglement Hamiltonian for a free real scalar field on an interval
Exact reduced density matrix for free real scalar field on finite interval, with explicit entanglement Hamiltonian results in massless limit and mass-dependent corrections.
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Scaling of entanglement entropy and correlations in the variable-range extended Ising model
In the variable-range Ising model, correlations are algebraic up to distance Z then exponential, while entanglement scales as Z^{-γ} at criticality independent of partition size and α>1.
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Topological entanglement entropy meets holographic entropy inequalities
Derives conditions for TEE probes, generalizes cyclic and multi-information quantities, and verifies holographic entropy inequalities for gapped topological states.
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Bound entanglement detection in $4 \otimes 4$ systems via generalized Choi maps
A family of positive but not completely positive maps on 4D space is constructed and applied to detect bound entanglement in 4⊗4 systems.