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quant-ph2026
Spatial-Order Hierarchy of Time-Dependent Exchange-Correlation Potential
Naoki Negishi
Exact time-dependent density-functional theory (DFT) separates the exchange-correlation potential into interaction and kinetic-correlation components, but the structural relation b…
quant-ph2026
Beyond Commutativity: Redesigning Trotter Decomposition via Local Symmetry
Naoki Negishi, Bo Yang
The product formula, commonly known as Trotter decomposition, is a central tool for digital quantum simulation, whose performance depends critically on how the Hamiltonian is parti…