Efficient Evaluation of Effective Action in Radial Backgrounds

  title={Efficient Evaluation of Effective Action in Radial Backgrounds},
  author={Hyunsoo Min},
  journal={arXiv: High Energy Physics - Theory},
  • Hyunsoo Min
  • Published 1 December 2009
  • Physics
  • arXiv: High Energy Physics - Theory
Recently a new caculational scheme for effective actions in radial background fields was developed. The effective action is expressed as an infinite sum of partial-wave contributions, using the rotational symmetry of the system. The sum becomes convergent after proper regularization and renormalization, but the rate of convergence is rather slow. We introduce a systematic way of accelerating the rate of convergence. This method is based on a radial WKB series in the angular momentum cut-off. We… 

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