Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Weyl frames and canonical transformations in geometrical scalar-tensor
  theories of gravity   We consider scalar-tensor theories of gravity defined in Weyl integrable
space-time and show that in the ADM formalism Weyl transformations
corresponding to change of frames induce canonical transformations between
different representations of the phase space. In this context, we discuss the
physical equivalence of two distinct Weyl frames at the classical level.

23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex