Effective action of QED in electric field backgrounds

Journal Article · Sat Nov 15 00:00:00 EST 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.78.105013· OSTI ID:21250944

Kim, Sang Pyo; Lee, Hyun Kyu; Yoon, Yongsung ^[1]

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1. Department of Physics, Kunsan National University, Kunsan 573-701, Korea and Asia Pacific Center for Theoretical Physics, Pohang 790-784 (Korea, Republic of)

We use the evolution operator method to find the one-loop effective action of scalar and spinor QED in electric field backgrounds in terms of the Bogoliubov coefficient between the ingoing and the outgoing vacua. We obtain the exact one-loop effective action for a Sauter-type electric field, E{sub 0}sech{sup 2}(t/{tau}), and show that the imaginary part correctly yields the vacuum persistence. The renormalized effective action shows the general relation between the vacuum persistence and the total mean number of created pairs for the constant and the Sauter-type electric field.

• OSTI ID: 21250944
• Journal Information: Physical Review. D, Particles Fields, Vol. 78, Issue 10; Other Information: DOI: 10.1103/PhysRevD.78.105013; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BACKGROUND RADIATION
ELECTRIC FIELDS
EVOLUTION
QUANTUM ELECTRODYNAMICS
SIMULATION