Contributor info: Mr Kyoichi Yamada

Kyoichi Yamada, Kohei Fukai

SciPost Phys. Core 6, 069 (2023) · published 19 October 2023 | Toggle abstract · pdf

We present the explicit expressions for the matrix product operator (MPO) representation for the local conserved quantities of the Heisenberg chain. The bond dimension of the MPO grows linearly with the locality of the charges. The MPO has more simple form than the local charges themselves, and their Catalan tree patterns naturally emerge from the matrix products. The MPO representation of local conserved quantities is generalized to the integrable SU(N) invariant spin chain.