Causal fermion systems and the ETH approach to quantum theory

@article{Finster2020CausalFS,
  title={Causal fermion systems and the ETH approach to quantum theory},
  author={Felix Finster and Jurg Frohlich and Marco Oppio and Claudio F. Paganini},
  journal={arXiv: Mathematical Physics},
  year={2020}
}
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 underlying these two general frameworks and discuss similarities and differences. For causal fermion systems, we introduce future algebras based on causal relations inherent to a causal fermion system. These algebras are analogous to the algebras previously introduced in the ETH approach. We then show… 

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