Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Note on Self-gravitating Radiation in AdS Spacetime   In this paper we investigate the equilibrium self-gravitating radiation in
higher dimensional, plane symmetric anti-de Sitter space. We find that there
exist essential differences from the spherically symmetric case: In each
dimension ($d\geq 4$), there are maximal mass (density), maximal entropy
(density) and maximal temperature configurations, they do not appear at the
same central energy density; the oscillation behavior appearing in the
spherically symmetric case, does not happen in this case; and the mass
(density), as a function of the central energy density, increases first and
reaches its maximum at a certain central energy density and then decreases
monotonically in $ 4\le d \le 7$, while in $d \geq 8$, besides the maximum, the
mass (density) of the equilibrium configuration has a minimum: the mass
(density) first increases and reaches its maximum, then decreases to its
minimum and then increases to its asymptotic value monotonically. The reason
causing the difference is discussed.

35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics