Positivity in the cosmos

June 10, 2019
3:00pm to 4:00pm

IFT Seminar Room/Red Room

Theoretical Physics, general interest
Mario Herrero Valea
École Polytechnique Fédérale de Lausanne

IFT Seminar Room/Red Room


We study the consequences of positivity of scattering amplitudes in the effective field theory description of Higgs-Dilaton inflation By requiring the EFT to be compatible with a unitary, causal, local and Lorentz invariant UV completion, we derive constraints on the Wilson coefficients of the first higher order derivative operators and show that the values allowed by the constraints are consistent with the phenomenological applications of the model.