Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pion Form Factor and Ambiguities in a Renormalizable Version of the
  Nambu-Jona-Lasinio Model   We analyze the presence of an ambiguity in the pion electromagnetic form
factor within a renormalizable version of the Nambu-Jona-Lasinio model. We
found out that the ambiguity present on the evaluation of the form factor
decouples from its transversal part, confirming previous results obtained
ignoring the ambiguity. This result helps us to understand the role played by
finite but undetermined quantities in Quantum Field Theories.

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The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg