%0 Journal Article
%T Families of quasi-local conservation laws and quantum spin transport
%A Tomaz Prosen
%A Enej Ilievski
%J Physics
%D 2013
%I arXiv
%R 10.1103/PhysRevLett.111.057203
%X For fundamental integrable quantum chains with deformed symmetries we outline a general procedure for defining a continuous family of quasi-local operators whose time-derivative is supported near the two boundary sites only. The program is implemented for a spin 1/2 XXZ chain, resulting in improved rigorous estimates for the high temperature spin Drude weight.
%U http://arxiv.org/abs/1306.4498v1