There are No Causality Problems for Fermi's Two Atom System
Detlev Buchholz, Jakob Yngvason
TL;DR
This paper reevaluates Fermi's two-atom thought experiment and demonstrates that, with correct theoretical treatment, it does not lead to causality violations as previously claimed.
Contribution
It clarifies the causality issue in Fermi's experiment, countering recent claims of paradoxes and providing a consistent theoretical analysis.
Findings
No causality paradox in Fermi's two-atom system when properly modeled
Counteracts recent claims of causality violations
Supports the consistency of quantum theory with relativity
Abstract
A repeatedly discussed gedanken experiment, proposed by Fermi to check Einstein causality, is reconsidered. It is shown that, contrary to a recent statement made by Hegerfeldt, there appears no causality paradoxon in a proper theoretical description of the experiment.
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