Afterglow of the dynamical Schwinger process: soft photons amass
Afterglow of the dynamical Schwinger process: soft photons amass
Otto, A.; Kämpfer, B.
We consider the conversion of an electric field into photons as a secondary probe of the dynamical Schwinger process. In spatially homogeneous electric fields, quantum fluctuations of electron-positron (e+e−) pairs are lifted on the mass shell leaving asymptotically a small finite pair density. The e+e− dynamics in turn couples to the quantized photon field and drives its on-shell mode occupation. The spectral properties of the emerging asymptotic photons accompanying the Schwinger process are calculated in lowest-order perturbation theory. Soft photons in the optical range are produced amass in the sub critical region, thus providing a promising discovery avenue, e.g.\ for laser parameters of the Extreme Light Initiative (ELI-NP) to be put in operation soon.
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Contribution to WWW
arXiv:1611.04438: https://arxiv.org/abs/1611.04438 -
Physical Review D 95(2017), 125007
DOI: 10.1103/PhysRevD.95.125007
Cited 13 times in Scopus
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Permalink: https://www.hzdr.de/publications/Publ-24370