While we all know and love momentum-space Feynman rules, sometimes we have cause to work in position space. As Lenny Susskind says, "only perverts think in momentum space." Some reasons to use position involve CFTs, curved spacetime, and possibly flat spacetime dimensions other than four...
Hello,
I'm trying to integrate a product of irrational "polynomials" that have arisen through dimensional regularization. As a warmup, I'm trying to understand how to integrate:
(w-a)^b (w-c)^d,
where b and d are arbitrary numbers, possibly irrational.
Mathematica can solve this...