8 papers
A New Approach to Axial Vector Model Calculations II
F. A. Dilkes, D. G. C. McKeon, Christian Schubert
We further develop the new approach, proposed in part I (hep-th/9807072), to computing the heat kernel associated with a Fermion coupled to vector and axial vector fields. We first…
A New Approach to Axial Vector Model Calculations
D. G. C. McKeon, C. Schubert
We consider the one-loop effective action due to a spinor loop coupled to an abelian vector and axial vector field background. After rewriting this effective action in terms of an…
Application of the Worldline Path Integral Method to the Calculation of Inverse Mass Expansions
D. Fliegner, P. Haberl, M. G. Schmidt +1
Higher order coefficients of the inverse mass expansion of one-loop effective actions are obtained from a one-dimensional path integral representation. For the case of a massive sc…
The Worldline Path Integral Approach to Feynman Graphs
M. G. Schmidt, C. Schubert
The worldline path integral approach to the Bern-Kosower formalism is reviewed, which offers an alternative to Feynman diagram calculations in quantum field theory. Recent progress…
An Improved Heat Kernel Expansion from Worldline Path Integrals
D. Fliegner, P. Haberl, M. G. Schmidt +1
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--di…
Multiloop Calculations in the String-Inspired Formalism: The Single Spinor-Loop in QED
Michael G. Schmidt, Christian Schubert
We use the worldline path-integral approach to the Bern-Kosower formalism for developing a new algorithm for calculation of the sum of all diagrams with one spinor loop and fixed n…