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arXiv · 2510.11932

One-dimensional tunneling of the two-body bound state

N. Shypka·O. Hryhorchak·V. Pastukhov
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Abstract

We consider bound and scattering states of the one-dimensional dimer formed by two coupled non-identical atoms when one of them also interacts with the zero-range potential located at the origin. By calculating the dimer localized and scattering wave functions, we identify properties of the system without the two-body bound-state collapse. In general, we predict an enhancement of the dimer reflection compared to a single atom, except for a narrow region on the attractive side of the external potential.

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N. Shypka, O. Hryhorchak, V. Pastukhov. 2025-10-13. One-dimensional tunneling of the two-body bound state. https://arxiv.org/abs/2510.11932

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