Optical PT symmetry and PT antisymmetry in one- and two-dimensional optical lattices Ruijin Sun, Wenxue Zhong, Guangling Cheng and Aixi Chen Eur. Phys. J. D, 77 2 (2023) 28 Published online: 21 February 2023 DOI: 10.1140/epjd/s10053-023-00609-5