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Momentum spectrum of Schwinger pair production in four-dimensional e-dipole fields
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We calculate the momentum spectrum of electron-positron pairs created via the Schwinger mechanism by a class of four-dimensional electromagnetic fields called e-dipole fields. To the best of our knowledge, this is the first time the momentum spectrum has been calculated for 4D, exact solutions to Maxwell's equations. Moreover, these solutions give fields that are optimally focused, and are hence particularly relevant for future experiments. To achieve this we have developed a worldline instanton formalism where we separate the process into a formation and an acceleration region.
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Cited by 2 Pith papers
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Nonlinear trident using WKB and worldline instantons
First WKB and worldline-instanton calculations of nonlinear trident in time-dependent and spacetime-dependent electric fields, including direct and exchange terms and a Coulomb suppression factor.
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Schwinger pair production in spacetime fields: Moir\'e patterns, Aharonov-Bohm phases and Sturm-Liouville eigenvalues
Two spacetime-separated electric pulses generically produce interference in the pair-production momentum spectrum when they are parallel, unlike time-dependent pulses, and can create 2D moiré patterns in the electron-...
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