Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pseudosmooth Tribrid Inflation in $SU(5)$   A realistic tribrid model of sneutrino inflation is constructed in an
$R$-symmetric $SU(5)$ grand unified theory (GUT). To avoid the monopole
problem, a pseudosmooth inflationary trajectory is generated with the help of
an additional $Z_5$ symmetry which is broken during and after inflation. The
predictions of inflationary parameters are made at the central value of the
scalar spectral index, $n_s =0.968$. The largest possible value of the tensor
to scalar ratio, $r\lesssim 0.0027$, is obtained with sub-Planckian field
values ($\lesssim m_P$). A successful realization of reheating and leptogenesis
is achieved by avoiding the gravitino problem with a reheat temperature as low
as $10^6$ GeV. The predicted range of the gauge symmetry breaking scale, $ 5
\times 10^{16} \lesssim M/\text{GeV} \lesssim 5 \times 10^{17}$, turns out to
be somewhat larger than the typical GUT scale. With additional vector-like
families, a successful gauge coupling unification is achieved by avoiding the
no-go theorem related to $R$-symmetric $SU(5)$ GUT.

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The categories of this paper are: physics
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga