Abstract:
I present a pedagogical review of Heisenberg-Euler effective Lagrangians, beginning with the original work of Heisenberg and Euler, and Weisskopf, for the one loop effective action of quantum electrodynamics in a constant electromagnetic background field, and then summarizing some of the important applications and generalizations to inhomogeneous background fields, nonabelian backgrounds, and higher loop effective Lagrangians.
Note:
  • Dedicated to the memory of Ian Kogan
  • To appear in Ian Kogan Memorial Collection, 'From Fields to Strings: Circumnavigating Theoretical Physics'
  • 82 pages; to appear in Ian Kogan Memorial Collection, ``From Fields to Strings: Circumnavigating Theoretical Physics''
  • review
  • effective Lagrangian
  • effective action
  • perturbation theory: higher-order
  • higher-order: 2
  • quantum electrodynamics
  • background field
  • approximation: semiclassical
  • renormalization: beta function
  • bibliography