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Unimodular vs Nilpotent Superfield Approach to Pure dS Supergravity
Sukruti Bansal, Silvia Nagy, Antonio Padilla +1
Recent progress in understanding de Sitter spacetime in supergravity and string theory has led to the development of a four dimensional supergravity with spontaneously broken super…
Deconstructing higher order clockwork gravity
Anastasios Avgoustidis, Florian Niedermann, Antonio Padilla +1
We consider the higher order clockwork theory of gravitational interactions, whereby a number of gravitons are coupled together with TeV strength, but nevertheless generate a Planc…
Massive Galileons and Vainshtein Screening
Clare Burrage, Ben Coltman, Antonio Padilla +2
The Vainshtein screening mechanism relies on nonlinear interaction terms becoming dominant close to a compact source. However, theories displaying this mechanism are generally unde…
Dark energy loopholes some time after GW170817
Lorenzo Bordin, Edmund J. Copeland, Antonio Padilla
We revisit the constraints on scalar tensor theories of modified gravity following the purge of GW170817. We pay particular attention to dynamical loopholes where the anomalous spe…