- #1
Hepth
Gold Member
- 464
- 40
If I have an integral:
[tex] A = \int \frac{d^d p}{(2 \pi)^d} Z[p][/tex]
And I want [tex] A^* A [/tex]
Is it
[tex] A^* A = \int \frac{d^d p}{(2 \pi)^d} Z^*[p] Z[p] [/tex] ?
Because the "p" is the same, and really it would be integral 1 times integral 2 times a delta, which should make it just one.
I don't think its true, and an example in mathematica doesn't work.
Is there a shortcut to get the product of two integrals to be one?:
[tex](\int \frac{d^d p}{(2 \pi)^d} Z^*[p])( \int \frac{d^d p}{(2 \pi)^d} Z[p]) =[/tex]
hmm, the product of two sums...
[tex] A = \int \frac{d^d p}{(2 \pi)^d} Z[p][/tex]
And I want [tex] A^* A [/tex]
Is it
[tex] A^* A = \int \frac{d^d p}{(2 \pi)^d} Z^*[p] Z[p] [/tex] ?
Because the "p" is the same, and really it would be integral 1 times integral 2 times a delta, which should make it just one.
I don't think its true, and an example in mathematica doesn't work.
Is there a shortcut to get the product of two integrals to be one?:
[tex](\int \frac{d^d p}{(2 \pi)^d} Z^*[p])( \int \frac{d^d p}{(2 \pi)^d} Z[p]) =[/tex]
hmm, the product of two sums...