Question on quadratic fluctuations in the path integral formalism

  • Thread starter omg!
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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
 

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  • #2
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can't anyone imagine what the factor

[tex]\frac{\psi(x\pm a)}{\psi(0)}[/tex]

might do?
 
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