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physics.flu-dyn2018★ 25 cited
Kelvin-Helmholtz instability is the result of parity-time symmetry breaking
Hong Qin, Ruili Zhang, Alexander S. Glasser +1
Parity-Time (PT)-symmetry is being actively investigated as a fundamental property of observables in quantum physics. We show that the governing equations of the classical two-flui…
quant-ph2018★ 3 cited
What breaks parity-time-symmetry? -- pseudo-Hermiticity and resonance between positive- and negative-action modes
Ruili Zhang, Hong Qin, Jianyuan Xiao +1
It is generally believed that Parity-Time (PT)-symmetry breaking occurs when eigenvalues or both eigenvalues and eigenvectors coincide. However, we show that this well-accepted pic…