Cosmological cutting rules from flat-space unitarity via dressing
Abstract
A bstract Using cosmological dressing rules, we uplift flat-space unitarity cuts to discontinuity relations for dS/EAdS observables. In this representation, Cutkosky delta functions map directly to “Disc” operations in the exchanged energy variable. This provides a transparent diagram-by-diagram origin of cosmological cutting rules. We illustrate this with explicit examples at tree level and one loop for conformally coupled scalars.
Fields of Study & Subjects
Black Holes and Theoretical Physics
Cosmology and Gravitation Theories
Noncommutative and Quantum Gravity Theories
Publication details
- Journal / source
- Journal of High Energy Physics
- Volume
- 2026
- Issue
- 9
- Publication date
- 9 September 2026
- Language
- EN