133 citations · 1.9k across the 150 of their papers we have counts for
5 papers · 1 filter
A Formulation of Quantum Field Theory Realizing a Sea of Interacting Dirac Particles
Felix Finster
In this survey article, we explain a few ideas behind the fermionic projector approach and summarize recent results which clarify the connection to quantum field theory. The fermio…
Entanglement and Second Quantization in the Framework of the Fermionic Projector
Felix Finster
A method is developed for realizing entanglement and general second quantized fermionic and bosonic fields in the framework of the fermionic projector.
An Action Principle for an Interacting Fermion System and its Analysis in the Continuum Limit
Felix Finster
We introduce and analyze a system of relativistic fermions in a space-time continuum, which interact via an action principle as previously considered in a discrete space-time. The…
The Dirac Equation and the Normalization of its Solutions in a Closed Friedmann-Robertson-Walker Universe
Felix Finster, Moritz Reintjes
We set up the Dirac equation in a Friedmann-Robertson-Walker geometry and separate the spatial and time variables. In the case of a closed universe, the spatial dependence is solve…
The Causal Perturbation Expansion Revisited: Rescaling the Interacting Dirac Sea
Felix Finster, Andreas Grotz
The causal perturbation expansion defines the Dirac sea in the presence of a time-dependent external field. It yields an operator whose image generalizes the vacuum solutions of ne…