Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the renormalisability of gauge invariant extensions of the squared
  gauge potential   We show that gauge invariant extensions of the local functional $\cO =
\frac12\int d^4x A^2$ have long range non localities which can only be
``renormalised'' with reference to a specific gauge. Consequently, there is no
gauge independent way of claiming the perturbative renormalisability of these
extensions. In particular, they are not renormalisable in the modern sense of
Weinberg and Gomis. Critically, our study does not support the view that ghost
fields play an indispensable role in the extension of a local operator into a
non-local one as claimed recently in the literature.

35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph