164 citations · 713 across the 19 of their papers we have counts for
20 papers
Effective field theory of a single scalar pion field for large scale structure in the Universe
Lara Celik, Bart Horn, Bhavya Mishra +1
We discuss the effective field theory of large scale structure in terms of a single scalar degree of freedom, corresponding to the velocity potential of the matter fluid in a CD…
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…
The Higgs field and early universe cosmology: a (brief) review
Bart Horn
We review and discuss recent work exploring the implications of the Higgs field for early universe cosmology, and vice versa. Depending on the model under consideration the Higgs m…
Observable relics of the simple harmonic universe
Peter Gilmartin, Bart Horn
We analyze observational signatures arising from an epoch in cosmology corresponding to the simple harmonic universe, which consists of positive curvature, a negative cosmological…
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…