Work

Worldline instantons for nonperturbative particle production by space and time dependent gravitational fields

Year: 2026

Type: article

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.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/lpwp-y3g4

Authors: Philip Semrén, Greger Torgrimsson

Institution: Umeå University

Language: English

Topic: Black Holes and Theoretical Physics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funder: Vetenskapsrådet

Award: New phenomena at high intensities