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Yangzhou University Team Maps Entanglement in Extra Dimensions
In cubic theories, entanglement between zero modes and higher dimensions falls as one over mass, with a coefficient of (μR)²/1024π³, and grows logarithmically with each additional level. This contrasts sharply with standard Kaluza-Klein reduction techniques where low-energy physics appears fully described by localised operators. Even when supersymmetry eliminates vacuum energy, this persistent quantum link reveals that extra dimensional states retain measurable influence on lower dimensional systems.
Momentum-space entanglement between low-energy states and higher dimensional Kaluza, Klein levels within five-dimensional systems has been quantified; this enables detailed description of system states beyond what’s possible using standard four-dimensional theories. The calculations reveal that while local effective theories accurately predict low-energy behaviour, they fail to fully capture the complete quantum state due to connections, entanglement, with these additional dimensions.…
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