Low-energy states of local Hamiltonians have half-system entanglement entropies upper-bounded by the thermal entropies of two fictitious systems whose combined energies match the state's energy.
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Numerical evidence shows multiple Rényi defect universality classes at O(3) quantum critical points depending on entanglement cut type, with a possible phase transition on the defect for extraordinary cuts as the Rényi index varies.
DMRG calculations find trivial paramagnets on four Archimedean lattices, collinear Neel order on four others, competing phases including a possible spin liquid on the triangular lattice, and a likely Dirac spin liquid on the kagome lattice for the quantum dipolar XY model.
citing papers explorer
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Quantum matter is weakly entangled at low energies
Low-energy states of local Hamiltonians have half-system entanglement entropies upper-bounded by the thermal entropies of two fictitious systems whose combined energies match the state's energy.
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Criticality on R\'enyi defects at (2+1)$d$ O(3) quantum critical points
Numerical evidence shows multiple Rényi defect universality classes at O(3) quantum critical points depending on entanglement cut type, with a possible phase transition on the defect for extraordinary cuts as the Rényi index varies.
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Ground states of quantum XY dipoles on the Archimedean lattices
DMRG calculations find trivial paramagnets on four Archimedean lattices, collinear Neel order on four others, competing phases including a possible spin liquid on the triangular lattice, and a likely Dirac spin liquid on the kagome lattice for the quantum dipolar XY model.