138 citations · 138 across the 3 of their papers we have counts for
4 papers · 1 filter
Asymptotic symmetries in Bondi gauge and the sub-subleading soft graviton theorem
Bart Horn
We investigate asymptotic symmetries which preserve the Bondi gauge conditions but do not preserve the asymptotic falloff conditions for the metric near the null boundary, and thei…
Double-soft graviton amplitudes and the extended BMS charge algebra
Jacques Distler, Raphael Flauger, Bart Horn
We discuss how scattering amplitudes in 4d Minkowski spacetime which involve multiple soft gravitons realize the algebra of BMS charges on the null boundary. In particular, we show…
Positive curvature and scalar field tunneling in the landscape
Bart Horn
We present a model of vacuum tunneling through a classically forbidden region where a scalar field changes its value simultaneously over the entire volume of a (meta)stable ancesto…
Trapped Inflation
Daniel Green, Bart Horn, Leonardo Senatore +1
We analyze a distinctive mechanism for inflation in which particle production slows down a scalar field on a steep potential, and show how it descends from angular moduli in string…