Effective Action and Schwinger Pair Production in Scalar QED
Sang Pyo Kim (Kunsan Nat'l Univ.), Hyun Kyu Lee (Hanyang Univ.)
TL;DR
This paper investigates how intense electromagnetic fields influence the quantum vacuum in scalar QED, focusing on effective action and Schwinger pair production, relevant for astrophysical phenomena with supercritical fields.
Contribution
It provides a detailed analysis of the effective action and pair production mechanisms in scalar QED under strong electromagnetic fields, extending understanding of vacuum instability.
Findings
Quantifies the effective action in strong fields
Derives pair production rates in scalar QED
Highlights implications for astrophysical objects
Abstract
Some astrophysical objects are supposed to have very strong electromagnetic fields above the critical strength. Quantum fluctuations due to strong electromagnetic fields modify the Maxwell theory and particularly electric fields make the vacuum unstable against pair production of charged particles. We study the strong field effect such as the effective action and the Schwinger pair production in scalar QED.
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