Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Null hypersurface quantization, electromagnetic duality and asymptotic
  symmetries of Maxwell theory   In this paper we consider introducing careful regularization in the
quantization of Maxwell theory in the asymptotic null infinity. This allows
systematic discussions of the commutators in various boundary conditions, and
application of Dirac brackets accordingly in a controlled manner. This method
is most useful when we consider asymptotic charges that are not localized at
the boundary $u\to \pm \infty$ like large gauge transformations. We show that
our method reproduces the operator algebra in known cases, and it can be
applied to other space-time symmetry charges such as the BMS transformations.
We also obtain the asymptotic form of the U(1) charge following from the
electromagnetic duality in an explicitly EM symmetric Schwarz-Sen type action.
Using our regularization method, we demonstrate that the charge generates the
expected transformation of a helicity operator. Our method promises
applications in more generic theories.

20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph