# Question on quadratic fluctuations in the path integral formalism

## Main Question or Discussion Point

hi,

could someone please explain to me the attached excerpt, more specifically, why one has to multiply with the ratio.

any ideas will be welcome!

thanks

#### Attachments

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## Answers and Replies

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can't anyone imagine what the factor

$$\frac{\psi(x\pm a)}{\psi(0)}$$

might do?

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