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A fresh quantum cosmological framework indicates that existence may unfold in perpetual exact cycles.
For many years researchers in cosmology have confronted the troubling Boltzmann brain paradox. In an unbounded, cooling cosmos random quantum fluctuations would far more readily generate isolated conscious minds complete with illusory histories than produce genuine universes populated by evolved beings.
Consequently every recollection you hold could have crystallized mere moments earlier through pure statistical chance.
Quantum cosmologist Sean Carroll together with collaborators, has advanced a contrasting picture. Rather than transient accidental entities within a lifeless expanse, observers may inhabit a precisely periodic quantum cosmos that recurs without end.
In their mid-2026 study Carroll, Nadiia Diachenko and Saakshi Dulani identified a mathematical pathway within quantum theory that permits a stable repeating universe. Through precise alignment of energy eigenvalues the model sidesteps the predominance of random Boltzmann brains, moving smoothly from low-entropy expansions resembling the Big Bang through contractions and back again. Should the proposal prove correct, each dialogue, choice and cherished recollection has already occurred infinitely often and will continue to do so indefinitely.
Although the notion of endless recurrence may appear imposing, it supplies an orderly scaffolding for existence and affirms that consciousness constitutes a durable aspect of the cosmos.
[Carroll, S. M., Diachenko, N., & Dulani, S. (2026). Toward a phenomenologically acceptable quantum cyclic universe. arXiv. DOI: 10.48550/arXiv.2605.30405]