1.2k citations · 3.8k across the 50 of their papers we have counts for
9 papers · 2 filters
The graviton four-point function in de Sitter space
James Bonifacio, Harry Goodhew, Austin Joyce +2
We compute the tree-level late-time graviton four-point correlation function, and the related quartic wavefunction coefficient, for Einstein gravity in de Sitter spacetime. We deri…
Soft theorems for boosts and other time symmetries
Lam Hui, Austin Joyce, Ilia Komissarov +3
We derive soft theorems for theories in which time symmetries -- symmetries that involve the transformation of time, an example of which are Lorentz boosts -- are spontaneously bro…
Exploring Answers to Questions
Jonathan J. Heckman, Austin Joyce, Jeremy Sakstein +1
We explore potential uses of physics formulated in Kleinian (i.e., ) signature spacetimes as a tool for understanding properties of physics in Lorentzian (i.e., ) signatu…
Gravity as a gapless phase and biform symmetries
Kurt Hinterbichler, Diego M. Hofman, Austin Joyce +1
We study effective field theories (EFTs) enjoying (maximal) biform symmetries. These are defined by the presence of a conserved (electric) current that has the symmetries of a Youn…
Integrating out beyond tree level and relativistic superfluids
Austin Joyce, Alberto Nicolis, Alessandro Podo +1
We revisit certain subtleties of renormalization that arise when one derives a low-energy effective action by integrating out the heavy fields of a more complete theory. Usually th…
Near-Zone Symmetries of Kerr Black Holes
Lam Hui, Austin Joyce, Riccardo Penco +2
We study the near-zone symmetries of a massless scalar field on four-dimensional black hole backgrounds. We provide a geometric understanding that unifies various recently discover…
Snowmass White Paper: The Cosmological Bootstrap
Daniel Baumann, Daniel Green, Austin Joyce +4
This white paper summarizes recent progress in the cosmological bootstrap, an approach to the study of the statistics of primordial fluctuations from consistency with unitarity, lo…
Snowmass White Paper: Cosmology at the Theory Frontier
Raphael Flauger, Victor Gorbenko, Austin Joyce +3
The precision cosmological model describing the origin and expansion history of the universe, with observed structure seeded at the inflationary cosmic horizon, demands completion…
Soft limits of the wavefunction in exceptional scalar theories
Noah Bittermann, Austin Joyce
We study the structure of the flat space wavefunctional in scalar field theories with nonlinearly realized symmetries. These symmetries imply soft theorems that are satisfied by wa…