Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Variation of the fine-structure constant: an update of statistical
  analyses with recent data   We analyze the consistency of different astronomical data of the variation in
the fine-structure constant obtained with KECK and VLT. We tested the
consistency using the Student test and confidence intervals. We splited the
data sets in to smaller intervals and grouped them acording to redshift and
angular position. Another statistical analysis is proposed that considers
phenomenological models for the variation in \alpha. Results show consistency
for the reduced intervals for each pair of data sets and suggests that the
variation in \alpha is significant at higher redshifts. Even though the dipole
model seems to be the most accurate phenomenological model, the statistical
analyses indicate that the variation in \alpha might be depending on both
redshift and angular position.

18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat