Real-time simulation of nonequilibrium transport of magnetization in large open quantum spin systems driven by dissipation

D. Banerjee, F. Hebenstreit, F. J. Jiang, U. J. Wiese

研究成果: 雜誌貢獻期刊論文同行評審

6 引文 斯高帕斯(Scopus)

摘要

Using quantum Monte Carlo, we study the nonequilibrium transport of magnetization in large open strongly correlated quantum spin-12 systems driven by purely dissipative processes that conserve the uniform or staggered magnetization, disregarding unitary Hamiltonian dynamics. We prepare both a low-temperature Heisenberg ferromagnet and an antiferromagnet in two parts of the system that are initially isolated from each other. We then bring the two subsystems in contact and study their real-time dissipative dynamics for different geometries. The flow of the uniform or staggered magnetization from one part of the system to the other is described by a diffusion equation that can be derived analytically.

原文英語
文章編號121104
期刊Physical Review B - Condensed Matter and Materials Physics
92
發行號12
DOIs
出版狀態已發佈 - 2015 9月 10

ASJC Scopus subject areas

  • 電子、光磁材料
  • 凝聚態物理學

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