Topological disclination states and charge fractionalization in a non-hermitian lattice

• Main Authors: Banerjee, Rimi, Mandal, Subhaskar, Terh, Yun Yong, Lin, Shuxin, Liu, Gui-Geng, Zhang, Baile, Chong, Yidong
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2025
• Subjects: Physics; Biorthogonal; Disclinations
• Online Access: https://hdl.handle.net/10356/182041
• Institution: Nanyang Technological University

We show that a non-Hermitian lattice with a disclination can host topological disclination states that are induced by on-site gain and loss. The disclination states are inherently non-Hermitian as they do not exist in the limit of zero gain or loss. They arise from charge fractionalization in the no...