Point interactions in acoustics: one dimensional models

Details Point interactions in acoustics: one dimensional models Point interactions in acoustics: one dimensional models

2005-04-28

arxiv.org/abs/math-ph/0504083v2

J. Math. Phys. 47, 062901 (2006)

Physics

Mathematical Physics

revised version, 30 pages, 2 figures

Scientific paper

10.1063/1.2209553

A one dimensional system made up of a compressible fluid and several mechanical oscillators, coupled to the acoustic field in the fluid, is analyzed for different settings of the oscillators array. The dynamical models are formulated in terms of singular perturbations of the decoupled dynamics of the acoustic field and the mechanical oscillators. Detailed spectral properties of the generators of the dynamics are given for each model we consider. In the case of a periodic array of mechanical oscillators it is shown that the energy spectrum presents a band structure.

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