Causal structure of interacting Weyl fermions in condensed matter systems

• Main Authors: Chiu, Wei-Chi, Chang, Guoqing, Macam, Gennevieve, Belopolski, Ilya, Huang, Shin-Ming, Markiewicz, Robert, Yin, Jia-Xin, Cheng, Zi-Jia, Lee, Chi-Cheng, Chang, Tay-Rong, Chuang, Feng-Chuan, Xu, Su-Yang, Lin, Hsin, M. Zahid Hasan, Bansil, Arun
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2023
• Subjects: Science::Physics::Electricity and magnetism; Dispersion; Light
• Online Access: https://hdl.handle.net/10356/168257
• Institution: Nanyang Technological University

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...