Quasilocal conserved operators in isotropic Heisenberg spin 1/2 chain
arXiv:1506.05049 · doi:10.1103/PhysRevLett.115.120601
Abstract
Composing higher auxiliary-spin transfer matrices and their derivatives, we construct a family of quasilocal conserved operators of isotropic Heisenberg spin 1/2 chain and rigorously establish their linear independence from the well-known set of local conserved charges.
5 + 6 pages in RevTex; v2: slightly revised version as accepted by PRL