Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Conformal Quantum Gravity with the Gauss-Bonnet Term   The conformal gravity is one of the most important models of quantum gravity
with higher derivatives. We investigate the role of the Gauss-Bonnet term in
this theory. The coincidence limit of the second coefficient of the
Schwinger-DeWitt expansion is evaluated in an arbitrary dimension $n$. In the
limit $n=4$ the Gauss-Bonnet term is topological and its contribution cancels.
This cancellation provides an efficient test for the correctness of calculation
and, simultaneously, clarifies the long-standing general problem concerning the
role of the topological term in quantum gravity. For $n\neq 4$ the Gauss-Bonnet
term becomes dynamical in the classical theory and relevant at the quantum
level. In particular, the renormalization group equations in dimension
$n=4-\epsilon$ manifest new fixed points due to quantum effects of this term.

21
The categories of this paper are: adap-org
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess