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An RG perspective on the (un)naturalness of Starobinsky inflation
Francesca Campani, Francesco Ferrarin, Serena Giardino +1
Starobinsky inflation is often regarded as a successful minimal model of the early universe, yet it relies on a large -coupling, in apparent tension with the expectation that…
Worldsheet functional RG and the -tower
Ivano Basile, Francesco Ferrarin, Alessia Platania +1
We apply the functional renormalization group to the worldsheet theory of the bosonic string. Imposing the Weyl anomaly cancellation as a condition on the local renormalization gro…
Impact of quantum gravity on the UV sensitivity of extremal black holes
Francesco Del Porro, Francesco Ferrarin, Alessia Platania
Recent work has revealed that extremal Kerr black holes may exhibit a sensitivity to higher-derivative corrections to Einstein's equations, displaying singularities in the tidal fo…