An improved heat kernel expansion from worldline path integrals

Nov, 1994
13 pages
Published in:
  • Discourses Math.Appl. 4 (1995) 87-99
e-Print:
Report number:
  • DESY-94-221,
  • HD-THEP-94-26

Citations per year

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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