Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Causal transformation of G\"odel-type space-times in conformal field
  theory   The G\"odel-type metrices are considered as backgrounds of the sigma-models.
In the conformal field theory such backgrounds are deformed by the exactly
marginal operators. We examinate, how the closed time-like curves (CTC's)
transform under such deformations.

25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
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The categories of this paper are: acc-phys
16
The categories of this paper are: stat
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The categories of this paper are: adap-org
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg