2 papers
nlin.SI2026
Matrix product operator representations for the local conserved quantities of the spin- XYZ chain
Kohei Fukai, Kyoichi Yamada
We present explicit matrix product operator (MPO) representations for the local conserved quantities of the spin- XYZ chain. Through these MPO representations, we simplify the…
cond-mat.stat-mech2023
Proof of completeness of the local conserved quantities in the one-dimensional Hubbard model
Kohei Fukai
We rigorously prove that the local conserved quantities in the one-dimensional Hubbard model are uniquely determined for each locality up to the freedom to add lower-order ones. Fr…