Off-shell Bethe states and the six-vertex model
Zapiski Nauchnykh Seminarov POMI, Questions of quantum field theory and statistical physics. Part 25, Tome 473 (2018), pp. 228-243

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We study the symmetric six-vertex model on a finite square lattice with the partial domain wall boundary conditions. We use the known connection of the model with the off-shell Bethe states of the Heisenberg XXZ spin chain. We obtain various formulas for the partition function, and also discuss the model in the limit of semi-infinite lattice.
@article{ZNSL_2018_473_a13,
     author = {A. G. Pronko and G. P. Pronko},
     title = {Off-shell {Bethe} states and the six-vertex model},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {228--243},
     publisher = {mathdoc},
     volume = {473},
     year = {2018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2018_473_a13/}
}
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A. G. Pronko; G. P. Pronko. Off-shell Bethe states and the six-vertex model. Zapiski Nauchnykh Seminarov POMI, Questions of quantum field theory and statistical physics. Part 25, Tome 473 (2018), pp. 228-243. http://geodesic.mathdoc.fr/item/ZNSL_2018_473_a13/