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Title: Influence of strong field vacuum polarization on gravitational-electromagnetic wave interaction

Abstract

The interaction between gravitational and electromagnetic waves in the presence of a static magnetic field is studied. The field strength of the static field is allowed to surpass the Schwinger critical field, such that the QED effects of vacuum polarization and magnetization are significant. Equations governing the interaction are derived and analyzed. It turns out that the energy conversion from gravitational to electromagnetic waves can be significantly altered due to the QED effects. The consequences of our results are discussed.

Authors:
;  [1];  [2]
  1. Department of Physics, Umeaa University, SE-901 87 Umeaa (Sweden)
  2. Department of Physics, Section of Astrophysics, Astronomy and Mechanics, 54124 Thessaloniki (Greece)
Publication Date:
OSTI Identifier:
21415225
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 82; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevD.82.024001; (c) 2010 The American Physical Society
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ELECTROMAGNETIC RADIATION; ENERGY CONVERSION; EQUATIONS; GRAVITATIONAL WAVES; INTERACTIONS; MAGNETIZATION; QUANTUM ELECTRODYNAMICS; VACUUM POLARIZATION; CONVERSION; ELECTRODYNAMICS; FIELD THEORIES; QUANTUM FIELD THEORY; RADIATIONS

Citation Formats

Forsberg, M., Brodin, G., and Papadopoulos, D.. Influence of strong field vacuum polarization on gravitational-electromagnetic wave interaction. United States: N. p., 2010. Web. doi:10.1103/PHYSREVD.82.024001.
Forsberg, M., Brodin, G., & Papadopoulos, D.. Influence of strong field vacuum polarization on gravitational-electromagnetic wave interaction. United States. doi:10.1103/PHYSREVD.82.024001.
Forsberg, M., Brodin, G., and Papadopoulos, D.. Thu . "Influence of strong field vacuum polarization on gravitational-electromagnetic wave interaction". United States. doi:10.1103/PHYSREVD.82.024001.
@article{osti_21415225,
title = {Influence of strong field vacuum polarization on gravitational-electromagnetic wave interaction},
author = {Forsberg, M. and Brodin, G. and Papadopoulos, D.},
abstractNote = {The interaction between gravitational and electromagnetic waves in the presence of a static magnetic field is studied. The field strength of the static field is allowed to surpass the Schwinger critical field, such that the QED effects of vacuum polarization and magnetization are significant. Equations governing the interaction are derived and analyzed. It turns out that the energy conversion from gravitational to electromagnetic waves can be significantly altered due to the QED effects. The consequences of our results are discussed.},
doi = {10.1103/PHYSREVD.82.024001},
journal = {Physical Review. D, Particles Fields},
number = 2,
volume = 82,
place = {United States},
year = {Thu Jul 15 00:00:00 EDT 2010},
month = {Thu Jul 15 00:00:00 EDT 2010}
}
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  • It is shown that for the condition (1) the polarization of an electron-positron vacuum by a magnetic field alters qualitatively the spectrum, polarization and angular distribution of the cyclotron radiation of a plasma.
  • The influence of polarization of the electron--positron vacuum by a magnetic field B on the absorption coefficients and refractive indices, and also on the polarization of normal waves in a magnetoactive plasma is considered. If the plasma density is N < or approx. = N/sub m/ = 4.5 x 10/sup 28/ (B/B/sub 0/)/sup 4/ cm/sup -3/, where B/sub 0/ = 4.4 x 10/sup 13/ G, this influence significantly changes the polarization, spectrum, and directional diagram of the plasma emission. In particular, near the so-called critical frequencies ..omega../sub c1,2/ < ..omega../sub B/ = eB/mc at which the influences of the plasmamore » and the vacuum on the linear polarizations are compensated, the vacuum effects change linear polarization of the radiation into circular polarization, while for frequencies ..omega.. >> ..omega../sub B/ they change circular into linear polarization. The emission spectrum of an optically thick plasma in the region of the critical frequencies has spectral features in the form of absorption or emission lines. Near the critical frequencies, the directional diagram of the emission of an optically thick plasma contracts strongly to the plane perpendicular to the magnetic field (giving rise to a fan diagram), and side lobes appear. These effects must be manifested in the emission of cosmic objects with a strong magnetic field. In particular, the spectral features in the region of the critical frequencies could imitate the ''cyclotron'' lines observed in x-ray pulsars.« less