An improved heat kernel expansion from worldline path integrals
Nov, 1994
13 pages
Published in:
- Discourses Math.Appl. 4 (1995) 87-99
Contribution to:
e-Print:
- hep-th/9411177 [hep-th]
Report number:
- DESY-94-221,
- HD-THEP-94-26
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Abstract:
The one--loop effective action for the case of a massive scalar loop in the background of both a scalar potential and an abelian or non--abelian gauge field is written in a one--dimensional 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.- talk: Winnipeg 1994/08/02
- gauge field theory
- potential: scalar
- effective action
- expansion: heat kernel
- path integral
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