2007/06/30 by Marko Znidaric, Marko Žnidarič, Tomaž Prosen +3 · 3 citations
Physics and Astronomy · #Opinion Dynamics and Social Influence #Quantum many-body systems #Theoretical and Computational Physics #cond-mat.str-el #quant-ph
paper · pdf · doi:10.1103/physrevb.77.064426
published as Phys. Rev. B 77, 064426 (2008) · 6 pages, 5 PS figures; v2: few minor changes, one additional figure
openalex publication_date 2008/02/25 · arxiv created 2008/03/19 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
We numerically investigate Heisenberg XXZ spin-1∕2 chain in a spatially random static magnetic field. We find that time-dependent density-matrix renormalization group simulations of time evolution can be performed efficiently, namely, the dimension of matrices needed to efficiently represent the time evolution increases linearly with time and entanglement entropies for typical chain bipartitions increase logarithmically. As a result, we show that for large enough random fields, infinite temperature spin-spin correlation function displays exponential localization in space indicating insulating behavior of the model.