118 citations · 387 across the 13 of their papers we have counts for
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hep-th2021
De Sitter scattering amplitudes in the Born approximation
Renata Ferrero, Chris Ripken
We present a covariant framework to compute scattering amplitudes and potentials in a de Sitter background. In this setting, we compute the potential of a graviton-mediated scatter…
hep-th2021★ 25 cited
Form Factors in Quantum Gravity - contrasting non-local, ghost-free gravity and Asymptotic Safety
Benjamin Knorr, Chris Ripken, Frank Saueressig
Form factors constitute the key building block when organising the gravitational dynamics in terms of a curvature expansion. They generalise the concept of momentum-dependent coupl…