Worldline Green Functions for Arbitrary Feynman Diagrams

  title={Worldline Green Functions for Arbitrary Feynman Diagrams},
  author={P. Dai and W. Siegel},
  journal={Nuclear Physics},
  • P. Dai, W. Siegel
  • Published 2007
  • Physics
  • Nuclear Physics
  • Abstract We propose a general method to obtain the scalar worldline Green function on an arbitrary 1D topological space, with which the first-quantized method of evaluating 1-loop Feynman diagrams can be generalized to calculate arbitrary ones. The electric analog of the worldline Green function problem is found and a compact expression for the worldline Green function is given, which has similar structure to the 2D bosonic Green function of the closed bosonic string. 
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