3 papers
hep-th2026
Classical Spin Transitions and Absorptive Scattering
Juan Pablo Gatica, Callum R. T. Jones
We describe an on-shell, amplitudes-based approach to incorporating radiation absorption effects in the post-Minkowskian scattering of generic, compact, spinning bodies. Classical…
hep-th2025
Constraints on Long-Range Forces in De Sitter Space
Daniel Baumann, Kurt Hinterbichler, Callum R. T. Jones +4
The representation theory of de Sitter space admits partially massless (PM) particles, but whether such particles can participate in consistent interacting theories remains unclear…
hep-th2025
Smooth Splitting and Zeros from On-Shell Recursion
Callum R. T. Jones, Shruti Paranjape
We describe a new approach to understanding the origins of recently discovered "hidden zeros" and "smooth splitting" of tree-level amplitudes in , Non-Linear Sigma M…