[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.3938/NPSM.68.1225

Schwinger Pair Production via Polons and the Origin of Stokes Phenomena

Kim, Sang Pyo (Department of Physics, Kunsan National University)

Publication Information

New Physics: Sae Mulli / v.68, no.11, 2018 , pp. 1225-1230 More about this Journal

Abstract

Schwinger pair production of electrons and positrons in a strong electric field is a prediction of nonperturbative quantum field theory, in which the out-vacuum is superposed of multi-particle states of the in-vacuum. Solving the Dirac or Klein-Gordon equation in the background field, though a linear wave equation, and finding the pair-production rate is a difficult or nontrivial job. The phase-integral method has recently been introduced to compute the pair production in space-dependent electric fields, and a complex analysis method has been employed to calculate the pair production in time-dependent electric fields. In this paper, we apply the complex analysis method to a Sauter-type electric field and other hyperbolic-type electric fields that vanish in the past and future and show that the Stokes phenomena in pair production occur when the time-dependent frequency for a given momentum has finite simple poles (polons) with pure imaginary residues.

Keywords

Schwinger effect; Strong QED; Complex analysis; Stokes phenomena;

Citations & Related Records

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