A Notion of Entropy for Causal Fermion Systems
Felix Finster
TL;DR
This paper introduces a new entropy concept for causal fermion systems, measuring their disorder relative to the vacuum, with definitions applicable in finite and infinite dimensions and analysis of its properties.
Contribution
It proposes a novel entropy measure for causal fermion systems and explores its fundamental properties in various dimensional settings.
Findings
Entropy defined for finite and infinite-dimensional systems
Properties of the entropy analyzed
Provides a framework for measuring disorder in causal fermion systems
Abstract
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 given both in the finite and infinite-dimensional settings. General properties of the entropy are analyzed.
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