Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On de Sitter deflationary cosmology from the spin-torsion primordial
  fluctuations and COBE data   Fluctuations on de Sitter solution of Einstein-Cartan field equations are
obtained in terms of the matter density primordial density fluctuations and
spin-torsion density and matter density fluctuations obtained from COBE data.
Einstein-de Sitter solution is shown to be unstable even in the absence of
torsion.The spin-torsion density fluctuation to generate a deflationary phase
is computed from the COBE data.

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The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
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The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con