Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Flipped GUT Inflation   We analyse the prospects for constructing hybrid models of inflation that
provide a dynamical realisation of the apparent closeness between the
supersymmetric GUT scale and the possible scale of cosmological inflation. In
the first place, we consider models based on the flipped SU(5)$\times$U(1)
gauge group, which has no magnetic monopoles. In one model, the inflaton is
identified with a sneutrino field, and in the other model it is a gauge
singlet. In both cases we find regions of the model parameter spaces that are
compatible with the experimental magnitudes of the scalar perturbations, $A_s$,
and the tilt in the scalar perturbation spectrum, $n_s$, as well as with an
indicative upper limit on the tensor-to-scalar perturbation ratio, $r$. We also
discuss embeddings of these models into SO(10), which is broken at a higher
scale so that its monopoles are inflated away.

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The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
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The categories of this paper are: eess
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The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
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The categories of this paper are: bayes-an
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The categories of this paper are: q-fin
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The categories of this paper are: chao-dyn
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The categories of this paper are: supr-con
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The categories of this paper are: mtrl-th
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The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
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The categories of this paper are: chem-ph
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The categories of this paper are: math-ph
10
The categories of this paper are: q-bio