Hi. I have come across the following equation(adsbygoogle = window.adsbygoogle || []).push({});

e^{A}e^{B}= e^{A+B}e^{[A , B]/2}

where A and B are operators.

Is this the B-C-H formula or is it a version that only applies under specific conditions on the operators ?

Does this equation imply that e^{A+B}≠ e^{B+A}?

Thanks

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# I Confused about the B-C-H equation

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