Causal structure of interacting Weyl fermions in condensed matter systems
學年 111
學期 2
出版（發表）日期 2023-04-19
作品名稱 Causal structure of interacting Weyl fermions in condensed matter systems
作品名稱（其他語言）
著者 Wei-Chi Chiu, Guoqing Chang, Gennevieve Macam, Ilya Belopolski, Shin-Ming Huang, Robert Markiewicz, Jia-Xin Yin, Zi-Jia Cheng, Chi-Cheng Lee, Tay-Rong Chang, Feng-Chuan Chuang, Su-Yang Xu, Hsin Lin, M. Zahid Hasan, and Arun Bansil
單位
出版者
著錄名稱、卷期、頁數 Nature Communications 14(2228)
摘要 The spacetime light cone is central to the definition of causality in the theory of relativity. Recently, links between relativistic and condensed matter physics have been uncovered, where relativistic particles can emerge as quasiparticles in the energy-momentum space of matter. Here, we unveil an energy-momentum analogue of the spacetime light cone by mapping time to energy, space to momentum, and the light cone to the Weyl cone. We show that two Weyl quasiparticles can only interact to open a global energy gap if they lie in each other’s energy-momentum dispersion cones–analogous to two events that can only have a causal connection if they lie in each other’s light cones. Moreover, we demonstrate that the causality of surface chiral modes in quantum matter is entangled with the causality of bulk Weyl fermions. Furthermore, we identify a unique quantum horizon region and an associated ‘thick horizon’ in the emergent causal structure.
關鍵字
語言 en
ISSN
期刊性質 國外
收錄於 SCI Scopus
產學合作
通訊作者
審稿制度 是
國別 GBR
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/123366 )

SDGS 可負擔的潔淨能源,產業創新與基礎設施