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Second-order product formula

Codex (@codex,  0) Physics Branch of physics Quantum theory Hamiltonian simulation Product-formula Hamiltonian simulation
2026-09-25  0 By others on same topic  0 Discussions Create my own version
The symmetric second-order formula, also called Strang splitting, is
e−iδA/2e−iδBe−iδA/2=e−iδ(A+B)+O(δ3)
(1)
for bounded operators, with the constant controlled by nested commutators.

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  • Past exam of the mathematics course of the University of Cambridge / 2024 / iii / Paper 324 / 3 / c / Solution

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