Jul 5 – 10, 2021
Europe/Rome timezone

Extended DeWitt-Schwinger subtraction scheme, heavy fields and decoupling

Jul 5, 2021, 5:10 PM
Talk in the parallel session Quantum Fields Quantum Fields


Antonio Ferreiro (University of Valencia & IFIC)


We will present the extended DeWitt-Schwinger subtraction scheme [1] in order to consistently remove the divergent pieces of the one loop effective action for a scalar field in curved spacetime. This scheme includes a $\mu$ dependence that results in the running of the coupling constants. We will prove that this scheme is compatible with the decoupling of heavy massive fields in the low energy limit as stated by the Appelquist-Carazzone theorem for flat spacetime. We will also use this scheme to construct an effective field theory that avoids the obstacles associated with the cosmological constant problem.

[1] A. Ferreiro and J. Navarro-Salas, Phys. Rev. D 102, 045021 (2020).

Primary authors

Antonio Ferreiro (University of Valencia & IFIC) Prof. Jose Navarro-Salas (University of Valencia-IFIC (CSIC))

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