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Magnetars as Laboratories for Strong Field QED

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arxiv 2112.02460 v1 pith:24TDQXBJ submitted 2021-12-05 astro-ph.HE hep-ph

Magnetars as Laboratories for Strong Field QED

classification astro-ph.HE hep-ph
keywords fieldvacuumelectricmagnetarsstrongbirefringencemagneticpairs
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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A strong electromagnetic field polarizes the vacuum and in the presence of an electric field creates pairs of a charged particle and its anti-particle. Magnetars, highly magnetized neutron stars with magnetic field comparable to or greater than the Schwinger field, give a significant amount of the vacuum polarization and vacuum birefringence and the induced electric field can create the electron-positron pairs, which are strong field quantum electrodynamics (QED) processes. In this paper, we use a closed formula for the one-loop effective action in the presence of a supercritical magnetic field and a subcritical electric field, find the vacuum birefringence analytically and numerically, and then discuss possible measurements in magnetars.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Detectability of Magnetar-Induced Vacuum Birefringence with IXPE and eXTP

    hep-ph 2026-05 unverdicted novelty 4.0

    Vacuum birefringence time delays from magnetars are an order of magnitude larger than previous estimates and should be quantitatively measurable by IXPE and eXTP, especially for 1RXS J170849.0-400910.