26 citations · 45 across the 4 of their papers we have counts for
4 papers
Consistent Construction of Perturbation Theory on Noncommutative Spaces
Stefan Denk, Volkmar Putz, Michael Wohlgenannt
We examine the effect of non-local deformations on the applicability of interaction point time ordered perturbation theory (IPTOPT) based on the free Hamiltonian of local theories.…
Towards UV Finite Quantum Field Theories from Non-Local Field Operators
Stefan Denk, Volkmar Putz, Manfred Schweda +1
A non-local toy model whose interaction consists of smeared, non-local field operators is presented. We work out the Feynman rules and propose a power counting formula for arbitrar…
Many-body aspects of positron annihilation in the electron gas
V. Apaja, S. Denk, E. Krotscheck
We investigate positron annihilation in electron liquid as a case study for many-body theory, in particular the optimized Fermi Hypernetted Chain (FHNC-EL) method. We examine sever…
Time ordered perturbation theory for non-local interactions; applications to NCQFT
Stefan Denk, Manfred Schweda
In the past decades, time ordered perturbation theory was very successful in describing relativistic scattering processes. It was developed for local quantum field theories. Howeve…