Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Simulations of Core Collapse Supernovae In One and Two Dimemsions Using
  Multigroup Neutrino Transport   In one dimension, we present results from comparisons of stationary state
multigroup flux-limited diffusion and Boltzmann neutrino transport, focusing on
quantities central to the postbounce shock reheating. In two dimensions, we
present results from simulations that couple one-dimensional multigroup
flux-limited diffusion to two-dimensional PPM hydrodynamics.

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The categories of this paper are: q-fin
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The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
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The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
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The categories of this paper are: solv-int
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The categories of this paper are: adap-org
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The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
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The categories of this paper are: stat