Entanglement persistence in nuclear fission fragments

Determine whether fission fragments remain entangled after separating from one another in the nuclear fission process.

Background

The paper identifies the persistence of quantum correlations between fission fragments after scission as an unresolved aspect of nuclear fission. Its TDHFB calculations indicate that substantial entanglement survives in a spatial bipartition of the daughter fragments beyond scission, but the authors do not establish whether this residual entanglement represents a general physical feature of fission fragments after they separate. The question is motivated by the broader unresolved nature of the fission process and by prior speculation concerning post-scission entanglement.

References

In addition, the fundamental nature of the process remains unknown, and there have been speculations about whether fission fragments would remain entangled after they split.

— Quantum Complexity in Nuclear Scattering and Fission Dynamics  (2609.03240 - Kadam et al., 3 Sep 2026) in Section 3.2, “Nuclear Fission”