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How to calculate any expectation value from path integral in quantum mechanics? In QM path integral the initial and final points are fixed and points between them are varied. But as far as i understand an expectation value is defined as ratio of path integrals with no fixed points.

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  • $\begingroup$ Hi Peter. To ensure relevant & useful answers, consider to cite references for various statements. $\endgroup$ Commented yesterday
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    $\begingroup$ I understand what the question intends to ask and I will answer it in detail shortly. This one merits a detailed response. $\endgroup$ Commented yesterday

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