Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cosmological constant, information and gedanken experiments with black
  hole horizons   The cosmological constant if considered as a fundamental constant, provides
an information treatment for gravitation problems, both cosmological and of
black holes. The efficiency of that approach is shown via gedanken experiments
for the information behavior of the horizons for Schwarzschild-de Sitter and
Kerr-de Sitter metrics. A notion of entropy regarding any observer and in all
possible non-extreme black hole solutions is suggested, linked also to
Bekenstein bound. The suggested information approach forbids the existence of
naked singularities.

34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con