"Parity Time Symmetry" introduces the basic ideas and principles of parity time symmetry in simple terms. The laws and characteristics of physical phenomena are described with an introduction to mathematical language and ideas. It is the hard work of the author and his team for decades, which provides reliable research ideas and methods for researchers in related fields, and has significant derivation and promotion.
The theory of parity time symmetry opens up the study of the observable real spectral properties of non-Hermitian Hamiltonian in classical systems. This theory can be widely used in the research of physical fields such as sound, light, electricity, heat, and magnetism, and can effectively solve the problem of energy gain and loss balance in engineering applications such as satellite communication, imaging, stealth, detection, and aerospace.
The condition for the symmetry of the Hamiltonian PT is due to its Hermitian property. PT symmetry rather than Hermitian Hamiltonian can describe real physical systems, these PT symmetric systems show rich singular features and representations, and such systems usually do not require rich and complex knowledge to understand. They provide opportunities to study and explore novel and interesting physical theories at both theoretical and experimental levels. Since 1998, the research on non-Hermitian PT symmetric systems has increased dramatically. At the time of writing, more than 3,500 papers on PT symmetry have been published, and PT papers have been submitted to more than 20 categories of arXiv (original collection website), and more than 40 international conferences devoted to PT symmetry have been held and seminars.
