Theoretical analysis demonstrates how extra spatial dimensions allow geometric bypass around barriers, distinguishing open multidimensional scattering from standard quantum tunneling.
This preprint presents a pedagogical, speculative toy model in which a quantum state has access to an additional spatial coordinate w. It asks whether a source, barrier, and detector localized near w = 0 could couple to transverse modes and modify measured barrier transmission. A barrier finite in w can permit a geometric bypass in the enlarged configuration space, but such a bypass is not ordinary quantum tunneling and is not identified here as an established mechanism in nature. Standard quantum mechanics already predicts tunneling quantitatively without a hidden dimension. The manuscript separates forbidden-region tunneling from open higher-dimensional scattering, reviews compactification and confinement, summarizes relevant experimental constraints, and defines the coupled-channel calculation and distinctive observable needed to test the proposal. ChatGPT and Sarvam AI assisted with brainstorming, drafting, and language revision; the author remains responsible for the scientific content and references.
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Chaman Prakash Kanth (2026) studied this question.
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