Two-loop Euler-Heisenberg effective actions from charged open strings
高能物理 - 理论
2011-07-19 v4
摘要
We present the multiloop partition function of open bosonic string theory in the presence of a constant gauge field strength, and discuss its low-energy limit. The result is written in terms of twisted determinants and differentials on higher-genus Riemann surfaces, for which we provide an explicit representation in the Schottky parametrization. In the field theory limit, we recover from the string formula the two-loop Euler-Heisenberg effective action for adjoint scalars minimally coupled to the background gauge field.
引用
@article{arxiv.hep-th/0412087,
title = {Two-loop Euler-Heisenberg effective actions from charged open strings},
author = {Lorenzo Magnea and Rodolfo Russo and Stefano Sciuto},
journal= {arXiv preprint arXiv:hep-th/0412087},
year = {2011}
}
备注
32 pages, 3 eps figures, plain LaTeX. References added, minor changes to the text. Published version, affiliation corrected