Ward identities for visco-acoustic and visco-elastic propagation media

This study discusses Ward identities in the presence of viscous dissipation. A Ward identity relates the Green function of the medium to the noise correlation function. Our study is focused on two types of mechanical waves: the scalar (1-component) pressure field, and the 3-component displacement fi...

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Veröffentlicht in:	Wave motion 2012-06, Vol.49 (4), p.484-489
Hauptverfasser:	Carmona, Mikael, Michel, Olivier J.J., Lacoume, Jean Louis, Sprynski, Nathalie, Nicolas, Barbara
Format:	Artikel
Sprache:	eng
Schlagworte:	Acoustic waves Acoustics Computer Science Condensed Matter Earth Sciences Elastic waves Engineering Sciences Environmental Sciences Exact sciences and technology Fundamental areas of phenomenology (including applications) Geophysics Global Changes Green function Linear acoustics Mechanics Noise correlation function Other Physics Sciences of the Universe Signal and Image Processing Solid mechanics Structural acoustics and vibration Structural and continuum mechanics Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...) Viscous damping Ward identity
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