- #1
kmyzzmy
- 1
- 0
When we want to calculate the n-point function in the position space, it's always very difficult. For example, when we're calculate the 3-point function of [tex]\phi^3[/tex] theory in position space, we would get an integral
[tex]\int d^4 z \frac{1}{|z-x_1|^2|z-x_2|^2|z-x_3|^2}[/tex]
It seems hard to integrate it.
I'm wondering if anyone has already done this before. Or is there any theory to calculate these kind of integrals?
[tex]\int d^4 z \frac{1}{|z-x_1|^2|z-x_2|^2|z-x_3|^2}[/tex]
It seems hard to integrate it.
I'm wondering if anyone has already done this before. Or is there any theory to calculate these kind of integrals?