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Laboratory creation of stable magic-number protonated water nanoclusters fromamorphous water-ice under simulated astrophysical conditions suggests thepossible ejection of such nanoparticles from ubiquitous amorphouswater-ice-covered cosmic dust to interstellar space. The quantum properties ofthese quintessential nanoparticles introduce a tantalizing prospect thatbridges the origins of dark matter and dark energy. The quantum-entangleddiffuse Rydberg electronic states inherent to cosmic water nanoclusters makethem plausible candidates for baryonic dark matter. Moreover, they exhibit thecapacity to absorb, through the microscopic dynamical Casimir effect, virtualphotons originating from zero-point-energy vacuum fluctuations occurring abovethe water-nanocluster vibrational frequency cutoff. This selective interactionleaves only vacuum fluctuations below these frequencies with gravitationalsignificance, cancelling the vacuum-energy catastrophe and yielding a sharedgenesis for dark matter and dark energy. These findings coalesce into acosmological framework depicting a cyclic universe, with cosmic waternanoclusters constituting a quintessence scalar field, instead of adhering tothe multiverse concept based on cosmic inflation theory. Recent observations ofCMB birefringence support this quintessence.

Nanoparticle Unification of Dark Matter and Dark Energy? Cancellation of the Vacuum Catastrophe