Efficient Evaluation of Effective Action in Radial Backgrounds
@article{Min2009EfficientEO,
title={Efficient Evaluation of Effective Action in Radial Backgrounds},
author={Hyunsoo Min},
journal={arXiv: High Energy Physics - Theory},
year={2009},
pages={426-430}
}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…
