Effective Action of Scalar QED in Electric Field Backgrounds - INSPIRE

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Effective Action of Scalar QED in Electric Field Backgrounds

Sang Pyo Kim
(
- Gunsan Natl. U. and
- APCTP, Pohang
)
,
Hyun Kyu Lee
(
- Hanyang U.
)
,
Yongsung Yoon
(
- Hanyang U.
)

Jul, 2008

11 pages

Published in:

Phys.Rev.D 78 (2008) 105013

e-Print:

0807.2696 [hep-th]

DOI:

10.1103/PhysRevD.78.105013

View in:

ADS Abstract Service

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Abstract: (arXiv)

We use the evolution operator method to find the one-loop effective action of scalar QED in electric field backgrounds in terms of the Bogoliubov coefficient between the ingoing and the outgoing vacuum. The effective action shows the general relation between the vacuum persistence and the mean number of created pairs for any electric field. We obtain the exact effective action for a constant electric field and a pulsed electric field, E_0 sech^2 (t/tau), and show that the imaginary part correctly yields the vacuum persistence.

11.15.Tk
12.20.Ds
13.40.-f
quantum electrodynamics: scalar
effective action
electric field: background field
quantization
Hamiltonian formalism
fluctuation

References(37)

Figures(1)

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)
,
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)

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