[tex](adsbygoogle = window.adsbygoogle || []).push({});

A = \langle q_f(t) \mid q_i(t) \rangle = \langle q_{f,H} \mid e^{iH(t_0-t)} e^{-iH(t-t_0)} \mid q_{i,H} \rangle = \langle q_{f,H} \mid q_{i,H} \rangle

[/tex]

This means that A is time-independent, and depends only on the reference point ##t_0##. How is it possibly? From Schoedinger picture it does depend on time! Thanks.

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# Amplitude's time dependence in Heisenberg representation

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