3 papers
math-ph2026
The Continuum Limit Analysis of Causal Fermion Systems for Curved Spacetimes
Patrick Fischer, Felix Finster
We construct the causal fermion system for globally hyperbolic spacetimes starting in the framework of algebraic quantum field theory. The fermionic projector is identified with th…
math-ph2026
A Canonical Construction of the Extended Hilbert Space for Causal Fermion Systems
Felix Finster, Patrick Fischer
It is shown that second variations of the causal action can be decomposed into a sum of three terms, two of which being positive and one being small. This gives rise to an approxim…
math-ph2025
Construction of Currents in Causal Fermion Systems
Felix Finster, Patrick Fischer
This paper presents a novel and systematic formalism for deriving classical field equations within the framework ofcausal fermion systems, explicitly accounting for higher-order co…