Nonperturbative pair production in interpolating fields
Journal article, 2015

We compare the effects of timelike, lightlike and spacelike one-dimensional inhomogeneities on the probability of nonperturbative pair production in strong fields. Using interpolating coordinates we give a unifying picture in which the effect of the inhomogeneity is encoded in branch cuts and poles circulated by complex worldline instantons. For spacelike inhomogeneities the length of the cut is related to the existence of critical points, while for lightlike inhomogeneities the cut contracts to a pole and the instantons become contractible to points, leading to simplifications particular to the lightlike case. We calculate the effective action in fields with up to three nonzero components, and investigate its behavior under changes in field dependence.

Author

Antony Ilderton

Chalmers, Applied Physics, Condensed Matter Theory

Greger Torgrimsson

Chalmers, Applied Physics, Condensed Matter Theory

Jonatan Wårdh

Chalmers, Applied Physics, Condensed Matter Theory

Physical Review D - Particles, Fields, Gravitation and Cosmology

1550-7998 (ISSN)

Vol. 92 6 artikel nr 065001- 065001

Subject Categories

Astronomy, Astrophysics and Cosmology

DOI

10.1103/PhysRevD.92.065001

More information

Created

10/8/2017