Nonequilibrium steady state phases of the interacting Aubry-André-Harper model
Yongchan Yoo, Junhyun Lee, Brian Swingle
Abstract
Recent studies of quantum many-body dynamics uncover many intriguing phenomena of thermalization and localization in the presence of a quasiperiodic potential. In this paper, the authors study nonequilibrium steady states of the one-dimensional interacting Aubry-Andre-Harper model by taking advantage of tensor network-based algorithms. In a weak potential regime, they find a superdiffusive to subdiffusive transition in spin transport within the thermal phase. The correlation structure of the steady states derived from the quantum mutual information shows an unusual oscillation pattern before reaching the localization transition. Our results suggest a rich phase diagram for the model.
Topics & Concepts
Non-equilibrium thermodynamicsSteady state (chemistry)State (computer science)PhysicsStatistical physicsMathematical physicsThermodynamicsMathematicsChemistryAlgorithmPhysical chemistryQuantum many-body systemsOpinion Dynamics and Social InfluenceComplex Network Analysis Techniques