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dc.contributor.authorIlderton, Aen
dc.contributor.authorTorgrimsson, Gen
dc.contributor.authorWårdh, Jen
dc.description13 pages, 10 figuresen

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 contractable 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 behaviour under changes in field dependence.

dc.format.extent065001 - ?en
dc.titleNonperturbative pair production in interpolating fieldsen
dc.typeJournal Article
plymouth.journalPhys. Rev. Den
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/EXTENDED UoA 10 - Mathematical Sciences
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA10 Mathematical Sciences
dc.rights.embargoperiodNot knownen
rioxxterms.typeJournal Article/Reviewen

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