Modified measures as an effective theory for causal fermion systems

Felix Finster, Eduardo Guendelman, Claudio F. Paganini

Research output: Contribution to journalArticlepeer-review


We compare the structures of the theory of causal fermion systems (CFS), an approach to unify quantum theory with general relativity (GR), with those of modified measure theories (MMT), which are a set of modified gravity theories. Classical spacetimes with MMT can be obtained as the continuum limit of a CFS. This suggests that MMT could serve as effective descriptions of modifications to GR implied by CFS. The goal is to lay the foundation for future research on exploring which MMTs are consistent with the causal action principle of CFS.

Original languageEnglish
Article number035007
JournalClassical and Quantum Gravity
Issue number3
StatePublished - 1 Feb 2024


  • causal fermion systems
  • effective theory
  • modified measure theories
  • quantum gravity

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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