Schwinger Pair Production at Finite Temperature in Scalar QED
Sang Pyo Kim (Kunsan Nat'l Univ.), Hyun Kyu Lee (Hanyang Univ.)
TL;DR
This paper investigates how finite temperature and magnetic fields influence Schwinger pair production in scalar QED, providing a detailed quantum statistical analysis of the process out of equilibrium.
Contribution
It introduces a method to calculate the finite-temperature pair-production rate in scalar QED using the Liouville-von Neumann approach, accounting for initial thermal ensembles.
Findings
Pair-production rate is enhanced by finite temperature effects.
Magnetic fields modify the pair-production dynamics.
Thermal factors significantly influence the production rate.
Abstract
In scalar QED we study the Schwinger pair production from an initial ensemble of charged bosons when an electric field is turned on for a finite period together with or without a constant magnetic field. The scalar QED Hamiltonian depends on time through the electric field, which causes the initial ensemble of bosons to evolve out of equilibrium. Using the Liouville-von Neumann method for the density operator and quantum states for each momentum mode, we calculate the Schwinger pair-production rate at finite temperature, which is the pair-production rate from the vacuum times a thermal factor of the Bose-Einstein distribution.
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