"The worldline formalism with background gravity"
Relatore: Dott. Fiorenzo Bastianelli- Dip. di Fisica, Un. di Bologna
04 Novembre 2003 ore 15.30
|The worldline formalism is a method which allows to compute efficiently
Feynman diagrams by using one dimensional path integrals to describe
the propagation of various particles.
In this talk I will describe how to extend this formalism to include
the coupling of particles of spin 0 and 1/2 to external gravity.
This method requires a precise definition of path integrals for
one dimensional nonlinear sigma models and their supersymmetric