Perturbative Quantum Field Theory in the Framework of the Fermionic Projector
arXiv:1310.4121 · doi:10.1063/1.4871549
Abstract
We give a microscopic derivation of perturbative quantum field theory, taking causal fermion systems and the framework of the fermionic projector as the starting point. The resulting quantum field theory agrees with standard quantum field theory on the tree level and reproduces all bosonic loop diagrams. The fermion loops are described in a different formalism in which no ultraviolet divergences occur.
63 pages, LaTeX, 19 figures, minor corrections and improvements (published version)