Robustness versus sensitivity in non-Hermitian topological lattices probed by pseudospectra

I. Komis, 2 D. Kaltsas, S. Xia, H. Buljan, 3 Z. Chen, 5 and K. G. Makris 2 ITCP-Physics Department, University of Crete, Heraklion, 71003, Greece Institute of Electronic Structure and Laser (IESL) – FORTH, Heraklion, 71110, Greece The MOE Key Laboratory of Weak-Light Nonlinear Photonics, TEDA Applied Physics Institute and School of Physics, Nankai University, Tianjin 300457, China Department of Physics, Faculty of Science, University of Zagreb, Bijenička c. 32, 10000 Zagreb, Croatia Department of Physics and Astronomy, San Francisco State University, California 94132, USA (Dated: March 8, 2022)