no code implementations • 8 Dec 2020 • Renata Ferrero, Roberto Percacci
We construct a general effective dynamics for diffeomorphisms of spacetime, in a fixed external metric.
General Relativity and Quantum Cosmology
no code implementations • 14 Sep 2011 • Daniel Litim, Roberto Percacci, Leslaw Rachwal
We compute the scale-dependence of the Planck mass and of the vacuum expectation value of the Higgs field using two very different renormalization group methods: a "holographic" procedure based on Einstein's equations in five dimensions with matter confined to a 3-brane, and a "functional" procedure in four dimensions based on a Wilsonian momentum cutoff.
High Energy Physics - Theory General Relativity and Quantum Cosmology High Energy Physics - Phenomenology Mathematical Physics Mathematical Physics