Time ordered perturbation theory for non-local interactions; applications to NCQFT

@inproceedings{Denk2003TimeOP,
  title={Time ordered perturbation theory for non-local interactions; applications to NCQFT},
  author={Stefan Denk and Manfred Schweda},
  year={2003}
}
In the past decades, time ordered perturbation theory was very successful in describing relativistic scattering processes. It was developed for local quantum field theories. However, there are field theories which are governed by non-local interactions, for example non-commutative quantum field theory (NCQFT). Filk [1] first studied NCQFT perturbatively obtaining the usual Feynman propagator and additional phase factors as the basic elements of perturbation theory. However, this treatment is… CONTINUE READING

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