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Yi-Xin Zhang

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Preprint Oct 2026

Exact Magnetic Confinement of a Doped Hole by Kinetic Frustration

We establish an exact mechanism of magnetic confinement driven purely by kinetic frustration. In a finite open sawtooth $U=\infty$ Hubbard chain of $L$ unit cells doped with one hole, the ground state at magnetization $M$ contains $M$ polarized triplet dimers surrounding a connected singlet region of length $\ell_{\rm...

N. Peshcherenko, Yi-Xin Zhang, C. Batista et al. · 0 citations

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