On exact overlaps of integrable matrix product states: inhomogeneities, twists and dressing formulas

Gombor, Tamás and Kristjansen, Charlotte and Moustakis, Vasileios and Qian, Xin (2025) On exact overlaps of integrable matrix product states: inhomogeneities, twists and dressing formulas. JOURNAL OF HIGH ENERGY PHYSICS, 2025 (100). ISSN 1126-6708

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Abstract

Invoking a quantum dressing procedure as well as the representation theory of twisted Yangians we derive a number of summation formulas for the overlap between integrable matrix product states and Bethe eigenstates which involve only eigenvalues of fused transfer matrices and which are valid in the presence of inhomogeneities as well as twists. Although the method is general we specialize to the SO(6) spin chain for which integrable matrix product states corresponding to evaluation representations of the twisted Yangian Y+(4) encode the information about one-point functions of the D3-D5 domain wall version of N=4 SYM. Considering the untwisted and homogeneous limit of our summation formulas we finally fill the last gap in the analytical understanding of the overlap formula for the SO(6) sector of the D3-D5 domain wall system.

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