Panda, A and Banerjee, S (2020) Entanglement in nonequilibrium steady states and many-body localization breakdown in a current-driven system. In: Physical Review B, 101 (18).
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Abstract
We model a one-dimensional current-driven interacting disordered system through a non-Hermitian Hamiltonian with asymmetric hopping and study the entanglement properties of its eigenstates. In particular, we investigate whether a many-body localizable system undergoes a transition to a current-carrying nonequilibrium steady state under the drive and how the entanglement properties of the quantum states change across the transition. We also discuss the dynamics, entanglement growth, and long-time fate of a generic initial state under an appropriate time evolution of the system governed by the non-Hermitian Hamiltonian. Our study reveals rich entanglement structures of the eigenstates of the non-Hermitian Hamiltonian. We find transition between current-carrying states with volume-law to area-law entanglement entropy, as a function of disorder and the strength of the non-Hermitian term. © 2020 American Physical Society.
| Item Type: | Journal Article |
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| Publication: | Physical Review B |
| Publisher: | American Physical Society |
| Additional Information: | The Copyright for this article belongs American Physical Society |
| Keywords: | Hamiltonians, Current-driven; Disordered system; Entanglement entropy; Entanglement properties; Non-equilibrium steady state; Non-Hermitian Hamiltonians; Quantum state; Time evolutions, Quantum entanglement |
| Department/Centre: | Division of Physical & Mathematical Sciences > Physics |
| Date Deposited: | 05 Nov 2021 09:16 |
| Last Modified: | 05 Nov 2021 09:16 |
| URI: | http://eprints.iisc.ac.in/id/eprint/65862 |
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