7-11 October 2019
Facultad de Ciencias Físicas, Universidad Complutense de Madrid
Europe/Madrid timezone

Unitarity problems in higher derivative field theories and Quantum Gravity

9 Oct 2019, 11:30
35m
Aula M2 (Facultad de Ciencias Físicas, Universidad Complutense de Madrid)

Aula M2

Facultad de Ciencias Físicas, Universidad Complutense de Madrid

Plaza de Ciencias, 1 Ciudad Universitaria 28040 Madrid, Spain

Speaker

Prof. Manuel Asorey

Description

We analyze the unitarity properties of higher derivative quantum
field theories which are free of ghosts and ultraviolet singularities.
We point out that in spite of the absence of ghosts most of these
theories are not unitary. This result confirms the difficulties of
finding a consistent quantum field theory of quantum gravity.

Primary author

Presentation Materials

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