Limiterions
Limiterions are a hypothetical class of elementary particles that are theorized to possess a property of "limitedness" in their interactions. This concept, explored in certain branches of theoretical physics, suggests that limiterions might mediate forces or possess characteristics that are inherently finite or restricted in some fundamental way. Unlike bosons which can occupy the same quantum state, or fermions which obey the Pauli exclusion principle, limiterions would follow a different set of quantum rules governing their behavior.
The precise nature of this "limitedness" is not definitively established and varies across different theoretical frameworks.
Research into limiterions is largely theoretical and has not yet yielded experimental evidence for their existence.