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cond-mat.str-el2026
Two-exciton bound states in the Merrifield exciton model
Ning Wu, Runtian Li, Dazhi Xu
Understanding the formation and dynamics of two-exciton bound states (BSs) is crucial for harnessing multi-exciton phenomena and designing next-generation organic semiconductor mat…
cond-mat.str-el2026
Exact momentum-space analysis of small spin-1/2 - rings
Zimeng Li, Ning Wu
This paper considers an -site spin-1/2 - ring with and . With the help of a set of exact few-magnon Bloch states, we obtain the block-diagonalized Hamiltonian…