2 papers
cond-mat.stat-mech2026
The Roaming Bethe Roots: An Effective Bethe Ansatz Beyond Integrability
Wenlong Zhao, Yunfeng Jiang, Rui-Dong Zhu
We propose an effective Bethe ansatz (EBA) for solving quantum many-body systems near an integrable point. Our approach retains the functional form of the Bethe wave function while…
hep-th2023
-deformation: a lattice approach
Yunfeng Jiang
Integrable quantum field theories can be regularized on the lattice while preserving integrability. The resulting theory on the lattice are integrable lattice models. A prototype o…