Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Solving the Standard Model Problems in Softened Gravity   The Higgs naturalness problem is solved if the growth of Einstein's
gravitational interaction is softened at an energy $ \lesssim 10^{11}\,$GeV
(softened gravity). We work here within an explicit realization where the
Einstein-Hilbert Lagrangian is extended to include terms quadratic in the
curvature and a non-minimal coupling with the Higgs. We show that this solution
is preserved by adding three right-handed neutrinos with masses below the
electroweak scale, accounting for neutrino oscillations, dark matter and the
baryon asymmetry. The smallness of the right-handed neutrino masses (compared
to the Planck scale) and the QCD $\theta$-term are also shown to be natural. We
prove that a possible gravitational source of CP violation cannot spoil the
model, thanks to the presence of right-handed neutrinos. Inflation is
approximately described by the Starobinsky model in this context, and can occur
even if we live in a metastable vacuum.

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The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol