Regularization of energy-momentum tensor correlators and parity-odd terms

Understand

We discuss the problem of regularizing correlators in conformal field theories.

• The only way to do it in coordinate space is to interpret them as distributions.
• Unfortunately except for the simplest cases we do not have tabulated mathematical results.
• The way out we pursue here is to go to momentum space and use Feynman diagram techniques and their regularization methods.