Anti-parity-time symmetry in diffusive systems

Ying Li, Yu Gui Peng, Lei Han, Mohammad Ali Miri, Wei Li, Meng Xiao, Xue Feng Zhu, Jianlin Zhao, Andrea Alù, Shanhui Fan, Cheng Wei Qiu

科研成果: 期刊稿件文章同行评审

265 引用 (Scopus)

摘要

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 the related physics need not be restricted to wave dynamics, and we consider systems described by diffusive dynamics. We study the heat transfer in two countermoving media and show that this system exhibits anti-parity-time symmetry. The spontaneous symmetry breaking results in a phase transition from motionless temperature profiles, despite the mechanical motion of the background, to moving temperature profiles. Our results extend the concepts of parity-time symmetry beyond wave physics and may offer opportunities to manipulate heat and mass transport.

源语言英语
页(从-至)170-173
页数4
期刊Science
364
6436
DOI
出版状态已出版 - 2019

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