Evolution of entanglement after a local quench

2007/03/31 by V. Eisler, Viktor Eisler, Ingo Peschel +1 · 5 citations
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum many-body systems #cond-mat.stat-mech

paper · pdf · doi:10.1088/1742-5468/2007/06/p06005

published as J. Stat. Mech. (2007) P06005 · 14 pages, 9 figures, final version

openalex publication_date 2007/06/01 · arxiv created 2007/06/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We study free electrons on an infinite half-filled chain, starting in the ground state with a bond defect. We find a logarithmic increase of the entanglement entropy after the defect is removed, followed by a slow relaxation towards the value of the homogeneous chain. The coefficients depend continuously on the defect strength.

Citations

• Scaling of Entanglement Entropy in the Random Singlet Phase
• Entanglement in theXXspin chain with an energy current
• Calculation of reduced density matrices from correlation functions

Cited by

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• Ground-state reference systems for expanding correlated fermions in one dimension
• Entanglement entropy from charge statistics: Exact relations for noninteracting many-body systems
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