Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Self-energy anomaly of an electric pointlike dipole in three-dimensional
  static spacetimes   We calculate the self-energy anomaly of a pointlike electric dipole located
in a static $(2+1)$-dimensional curved spacetime. The energy functional for
this problem is invariant under an infinite-dimensional (gauge) group of
transformations parameterized by one scalar function of two variables. We
demonstrate that the problem of the calculation of the self-energy anomaly for
a pointlike dipole can be reduced to the calculation of quantum fluctuations of
an effective two-dimensional Euclidean quantum field theory. We reduced the
problem in question to the calculation of the conformal anomaly of an effective
scalar field in two dimensions and obtained an explicit expression for the
self-energy anomaly of an electric dipole in an asymptotically flat, regular
$(2+1)$-dimensional spacetime which may have electrically neutral
black-hole-like metrics with regular Killing horizon.

8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom