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physics.class-ph2026
Wave Scattering at temporal interfaces with spatial-translation-symmetry mismatch
Cong Chen, Kaijun Yi, Guoliang Huang +1
Temporal interfaces enable wave manipulation through broken time-translation symmetry, but conventional formulations generally assume that spatial-translation symmetry is preserved…
physics.class-ph2026
Unimode material based low-frequency underwater acoustic isolation
Yu Wei, Binghao Zhao, Fen Du +2
Extremal materials are a specific class of Cauchy materials whose elasticity tensor has one or more zero eigenvalues. Each zero eigenvalue corresponds to a soft mode requiring zero…