Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Revisiting the Naturalness Problem -- Who is afraid of quadratic
  divergences? --   It is widely believed that quadratic divergences severely restrict natural
constructions of particle physics models beyond the standard model (SM).
Supersymmetry provides a beautiful solution, but the recent LHC experiments
have excluded large parameter regions of supersymmetric extensions of the SM.
It will now be important to reconsider whether we have been misinterpreting the
quadratic divergences in field theories. In this paper, we revisit the problem
from the viewpoint of the Wilsonian renormalization group and argue that
quadratic divergences, which can always be absorbed into a position of the
critical surface, should be simply subtracted in model constructions. Such a
picture gives another justification to the argument that the scale invariance
of the SM, except for the soft-breaking terms, is an alternative solution to
the naturalness problem. It also largely broadens possibilities of model
constructions beyond the SM since we just need to take care of logarithmic
divergences, which cause mixings of various physical scales and runnings of
couplings.

1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn