Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Critical gravity with a scalar field in four dimensions   We consider the critical gravity theory with a scalar field in four
dimensions. We find that this theory has the solution corresponding to the de
Sitter (dS), anti-de Sitter (AdS), and Minkowski background depending on
whether the action includes the cosmological term or not. The Minkowski
background is the solution which cannot be obtained in the model without a
scalar field. At the critical point, we show that the Abbott-Deser (AD) mass of
the Schwarzschild-de Sitter (SdS) black hole and the energy for the massless
graviton vanish, whose situation is not changed from the model without a scalar
field.

9
The categories of this paper are: nlin
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The categories of this paper are: adap-org
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
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The categories of this paper are: solv-int
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
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The categories of this paper are: eess
1
The categories of this paper are: cs