摘要翻译:
提出了一种实时路径积分蒙特卡罗方法来研究多体量子系统到达非平衡定态之前的动力学。该方法基于对相互作用图像中系统演化的精确约化方程的扩充,该方程适用于有效的路径积分(worldline)蒙特卡罗方法。对一个非弹性隧道谱模型的结果表明,该方法适用于许多物理上重要的区域,包括高(经典)和低(量子)温度,弱(微扰)和强电子-声子耦合。
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英文标题:
《Real-time path integral approach to nonequilibrium many-body quantum
system》
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作者:
Lothar M\"uhlbacher and Eran Rabani
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最新提交年份:
2007
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分类信息:
一级分类:Physics 物理学
二级分类:Mesoscale and Nanoscale Physics 介观和纳米物理
分类描述:Semiconducting nanostructures: quantum dots, wires, and wells. Single electronics, spintronics, 2d electron gases, quantum Hall effect, nanotubes, graphene, plasmonic nanostructures
半导体纳米结构:量子点、线和阱。单电子学,自旋电子学,二维电子气,量子霍尔效应,纳米管,石墨烯,等离子纳米结构
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一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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英文摘要:
A real-time path integral Monte Carlo approach is developed to study the dynamics in a many-body quantum system until reaching a nonequilibrium stationary state. The approach is based on augmenting an exact reduced equation for the evolution of the system in the interaction picture which is amenable to an efficient path integral (worldline) Monte Carlo approach. Results obtained for a model of inelastic tunneling spectroscopy reveal the applicability of the approach to a wide range of physically important regimes, including high (classical) and low (quantum) temperatures, and weak (perturbative) and strong electron-phonon couplings.
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PDF链接:
https://arxiv.org/pdf/707.0956