An Improved Heat Kernel Expansion from Worldline Path Integrals
Abstract
The oneloop effective action for the case of a massive scalar loop in the background of both a scalar potential and an abelian or nonabelian gauge field is written in a onedimensional path integral representation. From this the inverse mass expansion is obtained by Wick contractions using a suitable Green function, which allows the computation of higher order coefficients. For the scalar case, explicit results are presented up to order O(T**8) in the proper time expansion. The relation to previous work is clarified.
 Publication:

arXiv eprints
 Pub Date:
 November 1994
 arXiv:
 arXiv:hepth/9411177
 Bibcode:
 1994hep.th...11177F
 Keywords:

 High Energy Physics  Theory;
 High Energy Physics  Phenomenology
 EPrint:
 13 pages, Plain TEX, no figures