科学研究
报告题目:

lassical Instabilities of Conservative Systems are the Results of Parity-Time Symmetry Breaking

报告人:

张瑞丽 副教授(北京交通大学 )

报告时间:

报告地点:

腾讯会议 ID:661 169 399

报告摘要:

We show that the governing equations of the classical two-fluid interaction and the incompressible fluid system are PT-symmetric, and the well-known Kelvin-Helmholtz instability is the result of spontaneous PT-symmetry breaking. Specifically, it is shown that the boundaries between the eigenmodes with different Krein signatures. In terms of physics, this rigorously implies that the system is destabilized when a positive-action mode resonates with a negative-action mode, and that this is the only mechanism by which the system can be destabilized. It is anticipated that this physical mechanism of destabilization is valid for other collective instabilities in conservative systems in plasma physics, accelerator physics, and fluid dynamics systems.

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