# Path Integral doubt

1. Dec 13, 2008

### sumeetkd

I just read the chapter in Shankar regarding path integrals (the 8th)
I didnt quite get how he deduced that destructive interference in the summation
sets in after S/h>pi.(This is the first section itself)
I couldnt find reference to such a thing elsewhere.

2. Dec 13, 2008