Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Surface acoustic waves in rotating orthorhombic crystals   The propagation of surface (Rayleigh) waves over a rotating orthorhombic
crystal is studied. The crystal possesses three crystallographic axes, normal
to the symmetry planes: the half-space is cut along a plane normal to one of
these axes, the wave travels in the direction of another, and the rotation
occurs at a uniform rate about any of the three axes. The secular equation for
the surface wave speed is found explicitly; in contrast to the non-rotating
case, it is dispersive (frequency-dependent). Both Coriolis and centrifugal
accelerations appear in the equations of motion: none can be neglected in favor
of the other, even at small rotation rates.

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The categories of this paper are: math
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
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The categories of this paper are: hep-ex
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The categories of this paper are: adap-org
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The categories of this paper are: physics
25
The categories of this paper are: patt-sol
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The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th