Anti–parity-time symmetry in diffusive systems

• Published in: Science (American Association for the Advancement of Science) Vol. 364; no. 6436; pp. 170 - 173
• Main Authors: Li, Ying, Peng, Yu-Gui, Han, Lei, Miri, Mohammad-Ali, Li, Wei, Xiao, Meng, Zhu, Xue-Feng, Zhao, Jianlin, Alù, Andrea, Fan, Shanhui, Qiu, Cheng-Wei
• Format: Journal Article
• Language: English
• Published: United States American Association for the Advancement of Science 12.04.2019; The American Association for the Advancement of Science
• Subjects: Broken symmetry; Heat; Heat transfer; Heat waves; Mass transport; Parity; Phase transitions; Physics; Rotating disks; Rotation; Symmetry; Temperature profiles; Thermal coupling; Thermal energy; Wave physics

Various concepts related to parity-time symmetry, including anti–parity-time symmetry, have found broad applications in wave physics. Wave systems are fundamentally described by Hermitian operators, whereas their unusual properties are introduced by incorporation of gain and loss. We propose that th...