What is the formula for interchanging products of exponential operators in quantum mechanics., i.e. I want to write $e^Ae^B = e^{B+...}e^A$
2026-03-28 01:35:31.1774661731
Interchange exponential of operators in quantum mechanics
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The simplest formula you can get, I guess, is Trotter's product formula $$ e^{A+B}=\lim_{n\to\infty}(e^{A/n}e^{B/n})^{n}. $$