Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Universality of gauge coupling constant in the Einstein-QED system   In this paper we discuss the universality of the renormalization of the gauge
coupling constant in the quantum electrodynamics coupled to the Einstein's
gravity in the framework of effective field theory in an arbitrary gauge. We
observe that the renormalization of the three-point functions with different
particles receive different contributions from the gravitational sector.
Despite that, the universality of the gauge coupling constants is guaranteed by
the Ward identity that makes the renormalized electric charge receive no
contribution from the gravitational sector at one-loop order.

37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
2
The categories of this paper are: math
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
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
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas