|Title:||Steady States of Infinite-Size Dissipative Quantum Chains via Imaginary Time Evolution||Authors:||YING-JER KAO
Gangat, Adil A.
|Issue Date:||5-Jul-2017||Journal Volume:||119||Journal Issue:||1||Source:||Physical Review Letters||Abstract:||
© 2017 American Physical Society. Directly in the thermodynamic limit, we show how to combine local imaginary and real-time evolution of tensor networks to efficiently and accurately find the nonequilibrium steady states (NESSs) of one-dimensional dissipative quantum lattices governed by a local Lindblad master equation. The imaginary time evolution first bypasses any highly correlated portions of the real-time evolution trajectory by directly converging to the weakly correlated subspace of the NESS, after which, real-time evolution completes the convergence to the NESS with high accuracy. We demonstrate the power of the method with the dissipative transverse field quantum Ising chain. We show that a crossover of an order parameter shown to be smooth in previous finite-size studies remains smooth in the thermodynamic limit.
|Appears in Collections:||物理學系|
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