Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: General Structure of Conformal Anomaly and 4 Dimensional Photon-Dilaton
  Gravity   The general structure of the conformal anomaly and the dilaton's effect to it
are analysed. First we give a new formal proof of the statement that the
conformal anomaly, in the theory which is conformal invariant at the classical
level, is conformal invariant. The heat-kernel regularization and Fujikawa's
method are taken for the analysis. We present a new explicit result of the
conformal anomaly in 4 dimensional photon-dilaton gravity. This result is
examined from the point of the general structure.

21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc