Magnetic control of the pair creation in spatially localized supercritical fields

Q. Su, W. Su, Q.Z. Lv, M. Jiang, X. Lu, Zheng-Ming Sheng, R. Grobe

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Abstract

We examine the impact of a perpendicular magnetic field on the creation mechanism of electron-positron pairs in a supercritical static electric field, where both fields are localized along the direction of the electric field. In the case where the spatial extent of the magnetic field exceeds that of the electric field, quantum field theoretical simulations based on the Dirac equation predict a suppression of pair creation even if the electric field is supercritical. Furthermore, an arbitrarily small magnetic field outside the interaction zone can bring the creation process even to a complete halt, if it is sufficiently extended. The mechanism for this magnetically induced complete shutoff can be associated with a reopening of the mass gap and the emergence of electrically dressed Landau levels.
Original languageEnglish
Article number253202
Number of pages5
JournalPhysical Review Letters
Volume109
Publication statusPublished - 21 Dec 2012

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Keywords

  • magnetic control
  • pair creation
  • localized supercritical fields

Cite this

Su, Q., Su, W., Lv, Q. Z., Jiang, M., Lu, X., Sheng, Z-M., & Grobe, R. (2012). Magnetic control of the pair creation in spatially localized supercritical fields. Physical Review Letters, 109, [253202].