Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cosmological Constant, Conical Defect and Classical Tests of General
  Relativity   We investigate the perihelion shift of the planetary motion and the bending
of starlight in the Schwarzschild field modified by the presence of a
$\Lambda$-term plus a conical defect. This analysis generalizes an earlier
result obtained by Islam (Phys. Lett. A 97, 239, 1983) to the case of a pure
cosmological constant. By using the experimental data we obtain that the
parameter $\epsilon$ characterizing the conical defect is less than $10^{-9}$
and $10^{-7}$, respectively, on the length scales associated with such
phenomena. In particular, if the defect is generated by a cosmic string, these
values correspond to limits on the linear mass densities of $10^{19}g/cm$ and
$10^{21}g/cm$, respectively.

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The categories of this paper are: alg-geom
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The categories of this paper are: patt-sol
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The categories of this paper are: stat
4
The categories of this paper are: cond-mat
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The categories of this paper are: q-alg
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The categories of this paper are: adap-org
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The categories of this paper are: hep-th
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The categories of this paper are: nlin
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The categories of this paper are: econ
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The categories of this paper are: acc-phys
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The categories of this paper are: chem-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: cs
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-ph
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The categories of this paper are: funct-an