2019/12/20 by Adrian Del Maestro, Hatem Barghathi, Bernd Rosenow
Computer Science · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Entropy (arrow of time) #Fermion #Generality #Neural Networks and Reservoir Computing #Opinion Dynamics and Social Influence #Physics #Quantum #Quantum discord #Quantum entanglement #Quantum many-body systems #Quantum mechanics #Quantum mutual information #Squashed entanglement #Statistical physics #Theoretical physics #cond-mat.stat-mech
paper · pdf · doi:10.1103/physrevb.104.195101
published as Phys. Rev. B. 104, 195101 (2021) · 11 pages. Now includes analysis of next-nearest-neighbor interactions. Updated code and data repository see, https://github.com/DelMaestroGroup/papers-code-EntanglementQuantumQuench
arxiv created 2021/07/21 · openalex publication_date 2021/11/01 · arxiv updated 2021/11/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
We analyze fermions after an interaction quantum quench in one spatial dimension and study the growth of the steady state entanglement entropy density under either a spatial mode or particle bipartition. For integrable lattice models we find excellent agreement between the increase of spatial and particle entanglement entropy, and for chaotic models an examination of two further neighbor interaction strengths suggests similar correspondence. This result highlights the applicability of a statistical ensemble to compute expectation values of local observables after a quantum quench