Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Finite system size effects on Drift Wave stability   Unstable electrostatic resistive modes, driven by density gradients, are
identified in a bounded sheared slab. The boundary conditions play a crucial
role and are shown to change the nature of the problem, which is related to so
called "universal" mode. The dispersion relation and the structure of the
eigenmodes of the instability are derived and are shown to depend on a limited
set of dimensionless parameters. The occurrence and possible impact of these
modes on numerical simulations and actual plasmas are discussed.

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The categories of this paper are: quant-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-ex
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
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The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
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The categories of this paper are: hep-th
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The categories of this paper are: dg-ga
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The categories of this paper are: solv-int
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The categories of this paper are: mtrl-th
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The categories of this paper are: alg-geom
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The categories of this paper are: q-bio
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The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn