Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gravastars with higher dimensional spacetimes   We present a new model of gravastar in the higher dimensional Einsteinian
spacetime including Einstein's cosmological constant $\Lambda$. Following Mazur
and Mottola (2001,~2004) we obtain a set of solutions for gravastar. This
gravastar is described by three different regions, namely, (I) Interior region,
(II) Intermediate thin spherical shell and (III) Exterior region. The pressure
within the interior region is equal to the negative matter density which
provides a repulsive force over the shell. This thin shell is formed by ultra
relativistic plasma, where the pressure is directly proportional to the
matter-energy density which does counter balance the repulsive force from the
interior whereas the exterior region is completely vacuum assumed to be de
Sitter spacetime which can be described by the generalized Schwarzschild
solution. With this specification we find out a set of exact and non-singular
solutions of the gravastar which seems physically very interesting and
reasonable.

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The categories of this paper are: stat
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The categories of this paper are: nlin
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The categories of this paper are: math-ph
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The categories of this paper are: hep-th
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The categories of this paper are: patt-sol
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The categories of this paper are: cs
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The categories of this paper are: dg-ga
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The categories of this paper are: math
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The categories of this paper are: quant-ph
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The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
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The categories of this paper are: alg-geom
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The categories of this paper are: q-fin
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The categories of this paper are: ao-sci
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The categories of this paper are: q-alg
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The categories of this paper are: funct-an