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Title: The Lagrangian formulation of strong-field quantum electrodynamics in a plasma

The Lagrangian formulation of the scalar and spinor quantum electrodynamics in the presence of strong laser fields in a plasma medium is considered. We include the plasma influence in the free Lagrangian analogously to the “Furry picture” and obtain coupled equations of motion for the plasma particles and for the laser propagation. We demonstrate that the strong-field wave (i.e., the laser) satisfies a massive dispersion relation and obtain self-consistently the effective mass of the laser photons. The Lagrangian formulation derived in this paper is the basis for the cross sections calculation of quantum processes taking place in the presence of a plasma.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [1]
  1. Racah Institute of Physics, Hebrew University, Jerusalem 91904 (Israel)
  2. (Israel)
  3. Department of Applied Physics, Soreq Nuclear Research Center, Yavne 81800 (Israel)
  4. (Spain)
Publication Date:
OSTI Identifier:
22252811
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CROSS SECTIONS; DISPERSION RELATIONS; EFFECTIVE MASS; EQUATIONS OF MOTION; LAGRANGIAN FUNCTION; LASER RADIATION; PLASMA; QUANTUM ELECTRODYNAMICS