Cargando…

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) gau...

Descripción completa

Detalles Bibliográficos
Autores principales: Ellis, John, Gonzalo, Tomas E., Harz, Julia, Huang, Wei-Chih
Lenguaje:eng
Publicado: 2014
Materias:
Acceso en línea:https://dx.doi.org/10.1088/1475-7516/2015/03/039
http://cds.cern.ch/record/1973839
_version_ 1780944968795291648
author Ellis, John
Gonzalo, Tomas E.
Harz, Julia
Huang, Wei-Chih
author_facet Ellis, John
Gonzalo, Tomas E.
Harz, Julia
Huang, Wei-Chih
author_sort Ellis, John
collection CERN
description 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.
id cern-1973839
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2014
record_format invenio
spelling cern-19738392023-10-04T06:01:25Zdoi:10.1088/1475-7516/2015/03/039http://cds.cern.ch/record/1973839engEllis, JohnGonzalo, Tomas E.Harz, JuliaHuang, Wei-ChihFlipped GUT InflationParticle Physics - PhenomenologyWe 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.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)×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, As, and the tilt in the scalar perturbation spectrum, ns, 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.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.arXiv:1412.1460KCL-PH-TH-2014-49LCTS-2014-50CERN-PH-TH-2014-241KCL-PH-TH-2014-49LCTS-2014-50CERN-PH-TH-2014-241oai:cds.cern.ch:19738392014-12-03
spellingShingle Particle Physics - Phenomenology
Ellis, John
Gonzalo, Tomas E.
Harz, Julia
Huang, Wei-Chih
Flipped GUT Inflation
title Flipped GUT Inflation
title_full Flipped GUT Inflation
title_fullStr Flipped GUT Inflation
title_full_unstemmed Flipped GUT Inflation
title_short Flipped GUT Inflation
title_sort flipped gut inflation
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1088/1475-7516/2015/03/039
http://cds.cern.ch/record/1973839
work_keys_str_mv AT ellisjohn flippedgutinflation
AT gonzalotomase flippedgutinflation
AT harzjulia flippedgutinflation
AT huangweichih flippedgutinflation