Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anisotropic dynamics in a shaken granular dimer gas experiment   The dynamics, velocity fluctuations, and particle-plate interactions for a 2D
granular gas of shaken, non-spherical particles are studied experimentally. The
experiment consists of a horizontal plate that is vertically oscillated to
drive the dynamics of macroscopic dimers, spherical pairs that are loosely
connected by a rod that couple the interaction each of the spheres has with the
shaking plate. The extended nature of the particles results in more than one
energy-momentum transfer between the plate and each dimer per shaking cycle.
This complex interaction results in anisotropic behavior for the dimer that is
a function of the shaking parameters.

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The categories of this paper are: stat
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The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
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The categories of this paper are: eess
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The categories of this paper are: hep-ex
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The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
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The categories of this paper are: chao-dyn
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The categories of this paper are: nucl-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: funct-an