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恒元物理学讲座(第051期)


时间:2015/10/30 16:44:20作者:kyms点击量:
报告题目: Quantum critical dynamics at finite temperatures

  人: 阴帅 博士(台湾清华大学物理系)

报告时间:2015114(星期三),下午16:30

报告地点:bat365在线中国官网登录入口六层学术报告厅(致知楼3623-3624

报告摘要:

Describing the nonequilibrium quantum critical phenomena at finite temperatures is a great challenge in condensed matter physics [1], since the interplay between the long-ranged quantum and thermal fluctuations. None of analytic, semiclassical and effective numerical methods yields accurate results for dynamics in the quantum critical regime. In our work, the Lindblad equation is proposed to describe the nonequilibrium scaling behavior near the quantum critical point at finite temperatures. We show that the dissipation rate is an additional indispensible scaling variable in the quantum critical dynamics at finite temperatures [2]. The scaling theory is verified in both driven critical dynamics [2] and relaxation critical dynamics [3].

[1] S. Sachdev and B. Keimer, Phys. Today 64(2), 29 (2011),

[2] S. Yin, P. Mai and F. Zhong, Phys. Rev. B, 89, 094108 (2014),

[3] S. Yin, C. Lo, and P. Chen, in preparation

报告人简介:

阴帅博士2014年毕业于中山大学物理学习,获博士学位,现为台湾清华大学物理学系博士后。研究领域包括量子相变、量子临界动力学、经典临界动力学等方面,致力于量子临界动力学行为的标度研究,在Phys. Rev. B/E等物理学杂志上发表研究论文10余篇。

 

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