Maksym Serbyn, Z. Papić, Dmitry A. Abanin
We construct a complete set of local integrals of motion that characterize the many-body localized phase. Our approach relies on the assumption that local perturbations only act locally on the eigenstates in the interacting localized phase, which we support with numerical simulations of a random-field XXZ spin chain. Our study provides a description of the structure of the many-body localized states, and shows that the many-body localized phase is "integrable" in a local sense. We discuss the implications of the local conservation laws for quantum dynamics in the interacting localized phase, arguing that the many-body localization can be used to protect coherence in the system by preventing relaxation between eigenstates with different local integrals of motion.
View original:
http://arxiv.org/abs/1305.5554
No comments:
Post a Comment