Speaker: 苗荣欣 副教授 (中山大学)

    苗荣欣，2008年本科毕业于南开大学物理学院;2014年博士毕业于中国科学技术大学近代物理系;2014-2016德国马普引力物理研究所博士后;2016-2018 台湾清华大学博士后。2018年5月加入中山大学。 研究兴趣主要集中在引力的量子信息起源(It from Qubit)，带边界量子场论的物理性质及其全息对偶,目前已发表SCI论文20余篇。

Abstract:

  We show that when an external magnetic field parallel to the boundary is applied, Weyl anomaly give rises to a new anomalous current transport near the boundary. Similar to the Casimir effect, this transport phenomena has its origin in the effect of the boundary on the quantum fluctuations of the vacuum. The near-boundary current takes universal form for general boundary quantum field theories, which are covariant, gauge invariant, unitary and renormalizable. We verify the universal law of current by studying free QFT and holographic BCFT. Finally, we discuss the so-called "divergence" problem and show that it can be resolved by the law of conservation of charge.

2019-09-18 13:30 物理学院422