刘锋--University of Utah

题目：Fermionic Analogue of Black Hole with a Super High Hawking Temperature

报告人：刘锋

单位：University of Utah

报告时间：2018年10月24日

报告地点：中国科学技术大学

扫码观看本次报告视频

报告摘要

Measurement of gravitational Hawking radiation of black hole (BH) is prohibitive because of an extremely low Hawking temperature (TH). Efforts have been devoted to creating artificial BHs with a higher TH but having rather limited success. In this talk, I will discuss our recent theoretical studies demonstrating a fermionic analog of BH with a high TH ~ 3 K. We show that Floquet-Dirac states, formed in a periodically laser driven black phosphorous thin film, can be designed with a spatial gradient to mimic the “gravity” felt by fermionic quasiparticles as that for a Schwarzschild BH (SBH). Quantum tunneling of electrons from a type-II Dirac cone (inside BH) to a type-I Dirac cone (outside) emits a SBH-like Hawking radiation spectrum. This work provides a laboratory design of fermionic BH and a condensed-matter analogue to study fascinating astrophysical phenomena.  

个人简介

刘锋，材料物理学家，美国犹他大学材料系终身教授、系主任，美国物理学会会士(APS Fellow)，物理评论快报编辑(PRL Divisional Associate Editor)。曾获德国洪堡高级研究奖，澳大利亚国际教授奖，中国基金委海外杰青奖等。刘锋教授主要从事应变薄膜纳米自主装，石墨烯，拓扑材料的基础和应用研究。已发表280多篇学术论文。另外，刘锋教授还是10多项专利的发明人。2011年，刘锋教授的团队发明了纳烯(Nanoxene)复合材料并创办了Life-E公司，目前正在开拓纳烯材料技术在电热产品中的应用。

更多精彩视频登陆网站

https://www.am-stc.com/