scholarly journals Stability of entanglement-spectrum crossing in quench dynamics of one-dimensional gapped free-fermion systems

2019 ◽  
Vol 99 (3) ◽  
Author(s):  
Shuangyuan Lu ◽  
Jinlong Yu
Keyword(s):  
Free Fermion ◽  
One Dimensional ◽  
Entanglement Spectrum ◽  
Fermion Systems ◽  
Quench Dynamics

Quench dynamics of edge modes revealed by entanglement spectrum in a dimerized chain with dilute impurities

2018 ◽  
Vol 32 (22) ◽  
pp. 1850240
Author(s):  
Qiu-Lan Zhang
Keyword(s):  
Zero Energy ◽  
One Dimensional ◽  
Entanglement Spectrum ◽  
Quench Dynamics ◽  
The One

We study the evolution of the one-particle entanglement spectrum for the one-dimensional dimerized chain in the presence of impurities. When the system quenches from a topologically nontrivial phase to a trivial phase with disorder, the spectrum features the split of two zero-energy edge modes due to their interaction with impurities. Our observations demonstrate the feasibility of using entanglement spectrum to study the quench dynamics of topological systems.

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