122 citations · 303 across the 13 of their papers we have counts for
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physics.class-ph2022★ 22 cited
Hidden symmetries in acoustic wave systems
Malte Röntgen, Christian V. Morfonios, Peter Schmelcher +1
Mirror symmetry of a wave system imposes corresponding even or odd parity on its eigenmodes. For a discrete system, eigenmode parity on a specific subset of sites may also originat…
physics.class-ph2016★ 122 cited
Non-Hermitian Acoustic Metamaterials: the role of Exceptional Points in sound absorption
V. Achilleos, G. Theocharis, O. Richoux +1
Effective non-Hermitian Hamiltonians are obtained to describe coherent perfect absorbing and lasing boundary conditions. PT -symmetry of the Hamiltonians enables to design configur…