Families of Quasilocal Conservation Laws and Quantum Spin Transport
Tomaž ProsenDepartment of Physics, FMF, University of Ljubljana, Jadranska 19, 1000 Ljubljana, SloveniaEnej IlievskiDepartment of Physics, FMF, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia
2013en
ABI
Abstract
For fundamental integrable quantum chains with deformed symmetries we outline a general procedure for defining a continuous family of quasilocal 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.
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Cited by 20 references