One-Loop Effective Action in Quantum Gravitation

Preprint number: CP3-Origins-2015-48 DNRF90 and DIAS-2015-48
Authors: Alessandro Codello (CP3-Origins & DIAS), Roberto Percacci (SISSA, Trieste), and Leslaw Rachwal (ICTP & SISSA, Trieste)
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We present the formalism of computing one-loop effective action for Quantum Gravitation using non-local heat kernel methods. We found agreement with previous old results. In main part of my presentation I considered the system of E-H gravitation and scalar fields. We were able to derive nonlocal quantum effective action up to the second order in heat kernel generalized curvatures. By going to flat spacetime expressions for gravitational formfactors are possible to construct and compare with the results from effective field theory for gravity.