Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electromagnetic Mach principle   We will introduce a gauge model which an electromagnetic coupling constant
and local mass are related to all the charge in the universe. we will use the
standard Dirac action, but where the mass and the electromagnetic coupling
constant are a function of the sum of all the charge in the universe, which
represent Mach principle for electromagnetic coupling constant. The
formalisation is not manifestly Lorentz invariant, however Lorentz invariance
can be restored by performing a phase transformation of the Dirac field.

18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
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The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg