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题名: Density matrix renormalization group study of a quantum impurity model with Landau-Zener time-dependent Hamiltonian
作者: Guo, Cheng ;  Weichselbaum, Andreas ;  Kehrein, Stefan ;  Xiang, Tao ;  von Delft, Jan
刊名: PHYSICAL REVIEW B
出版日期: 2009
卷号: 79, 期号:11, 页码:-
关键词: DYNAMICS ;  SYSTEM
学科分类: Physics
通讯作者: Guo, C , Arnold Sommerfeld Ctr Theoret Phys, Dept Phys, D-80333 Munich, Germany
部门归属: [Guo, C; Weichselbaum, A; Kehrein, S; von Delft, J] Arnold Sommerfeld Ctr Theoret Phys, Dept Phys, D-80333 Munich, Germany; [Guo, C; Weichselbaum, A; Kehrein, S; von Delft, J] Univ Munich, Ctr NanoSci, D-80333 Munich, Germany; [Guo, C; Xiang, T] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; [Xiang, T] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China
英文摘要: We use the adaptive time-dependent density matrix renormalization group method (t-DMRG) to study the nonequilibrium dynamics of a benchmark quantum impurity system which has a time-dependent Hamiltonian. This model is a resonant-level model, obtained by a mapping from a certain Ohmic spin-boson model describing the dissipative Landau-Zener transition. We map the resonant-level model onto a Wilson chain, then calculate the time-dependent occupation n(d)(t) of the resonant level. We compare t-DMRG results with exact results at zero temperature and find very good agreement. We also give a physical interpretation of the numerical results.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000264768900064
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5358
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Guo, Cheng,Weichselbaum, Andreas,Kehrein, Stefan,et al. Density matrix renormalization group study of a quantum impurity model with Landau-Zener time-dependent Hamiltonian[J]. PHYSICAL REVIEW B,2009,79(11):-.
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