Worldline instantons for nonperturbative particle production by space and time dependent gravitational fields
Abstract
We develop a worldline-instanton approach for calculating the momentum spectrum of particles produced by gravitational fields that depend on both space and time. The instantons are open. The middle part is complex and describes the formation region, while the ends describe the trajectories of asymptotic particles.
Fields of Study & Subjects
Cosmology and Gravitation Theories
Quantum Electrodynamics and Casimir Effect
Noncommutative and Quantum Gravity Theories
Publication details
- Journal / source
- Physical review. D/Physical review. D.
- Publisher
- American Physical Society (APS)
- Volume
- 113
- Issue
- 5
- Publication date
- 12 February 2026
- Language
- EN