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quant-ph2024★ 1 cited
Strict area law implies commuting parent Hamiltonian
Isaac H. Kim, Ting-Chun Lin, Daniel Ranard +1
We show that in two spatial dimensions, when a quantum state has entanglement entropy obeying a strict area law, meaning for constants independent o…
quant-ph2023
A spin-energy operator inequality for Heisenberg-coupled qubits
Daniel Ranard, C. Jess Riedel
We slightly strengthen an operator inequality identified by Correggi et al. that lower bounds the energy of a Heisenberg-coupled graph of spins using the total spin. In par…