Causal fermion systems as a candidate for a unified physical theory

@article{Finster2015CausalFS,
  title={Causal fermion systems as a candidate for a unified physical theory},
  author={Felix Finster and Johannes Kleiner},
  journal={Journal of Physics: Conference Series},
  year={2015},
  volume={626}
}
The theory of causal fermion systems is an approach to describe fundamental physics. Giving quantum mechanics, general relativity and quantum field theory as limiting cases, it is a candidate for a unified physical theory. We here give a non-technical introduction. 
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53 Citations
Background Citations
22

53 Citations

Fermionic Fock Spaces and Quantum States for Causal Fermion Systems
It is shown for causal fermion systems describing Minkowski-type spacetimes that an interacting causal fermion system at time t gives rise to a distinguished state on the algebra generated by…
Causal Fermion Systems -- An Overview
The theory of causal fermion systems is an approach to describe fundamental physics. We here introduce the mathematical framework and give an overview of the objectives and current results.
Linear bosonic quantum field theories arising from causal variational principles
It is shown that the linearized fields of causal variational principles give rise to linear bosonic quantum field theories. The properties of these field theories are studied and compared with the…
Causal Fermion Systems: An Elementary Introduction to Physical Ideas and Mathematical Concepts
We give an elementary introduction to the theory of causal fermion systems, with a focus on the underlying physical ideas and the conceptual and mathematical foundations.
The Continuum Limit of Causal Fermion Systems
This monograph introduces the basic concepts of the theory of causal fermion systems, a recent approach to the description of fundamental physics. The theory yields quantum mechanics, general…
A mechanism of baryogenesis for causal fermion systems
It is shown that the theory of causal fermion systems gives rise to a novel mechanism of baryogenesis. This mechanism is worked out computationally in globally hyperbolic spacetimes in a way which…
A notion of entropy for causal fermion systems
  • F. Finster
  • Physics, Computer Science
    Letters in Mathematical Physics
  • 2021
A notion of entropy is introduced for causal fermion systems. This entropy is a measure of the state of disorder of a causal fermion system at a given time compared to the vacuum. The definition is…
Causal Fermion Systems: Discrete Space-Times, Causation and Finite Propagation Speed
  • F. Finster
  • Physics, Philosophy
    Journal of Physics: Conference Series
  • 2019
The theory of causal fermion systems is a recent approach to fundamental physics. Giving quantum mechanics, general relativity and quantum field theory as limiting cases, it is a candidate for a…
Causal Fermion Systems: A Primer for Lorentzian Geometers
We give a brief introduction to causal fermion systems with a focus on the geometric structures in space-time.
Causal fermion systems and the ETH approach to quantum theory
After reviewing the theory of "causal fermion systems" (CFS theory) and the "Events, Trees, and Histories Approach" to quantum theory (ETH approach), we compare some of the mathematical structures…
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References

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The causal action principle is analyzed for a system of relativistic fermions composed of massive Dirac particles and neutrinos. In the continuum limit, we obtain an effective interaction described…
Perturbative quantum field theory in the framework of the fermionic projector
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…
The Continuum Limit of Causal Fermion Systems
This monograph introduces the basic concepts of the theory of causal fermion systems, a recent approach to the description of fundamental physics. The theory yields quantum mechanics, general…
The Continuum Limit of a Fermion System Involving Neutrinos: Weak and Gravitational Interactions
We analyze the causal action principle for a system of relativistic fermions composed of massive Dirac particles and neutrinos. In the continuum limit, we obtain an effective interaction described by…
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