QF2 - Quantum Field Theory on Curved Spacetime |
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Speaker |
Hack, Thomas-Paul |
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Coauthors |
Géré, Antoine; Hack, Thomas-Paul; Pinamonti, Nicola |
| Talk Title |
An Analytic Regularisation Scheme On Curved Spacetimes |
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Abstract |
We develop a renormalisation scheme for time–ordered products in interacting field theories on curved spacetimes which consists of an analytic regularisation of Feynman amplitudes and a minimal subtraction of the resulting pole parts. This scheme is directly applicable to spacetimes with Lorentzian signature, manifestly generally covariant, invariant under any spacetime isometries present and constructed to all orders in perturbation theory. Moreover, the scheme captures correctly the non–geometric state–dependent contribution of Feynman amplitudes and it is well–suited for practical computations, including momentum space computations in cosmological spacetimes. |
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