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Group velocity of the acoustic eigen-modes in sonic crystals

Zhen Ye
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Abstract

In this brief report, the group velocity of the eigen-modes in sonic crystals is derived, and shown to equal the averaged energy velocity of the eigen-modes. How the group velocity can be used to describe acoustic energy flows in sonic crystals is discussed.

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Zhen Ye. 2004-11-06. Group velocity of the acoustic eigen-modes in sonic crystals. https://arxiv.org/abs/physics/0411060

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