Two-Stage Inflation as a Solution to the Initial Condition Problem of Hybrid Inflation

We address the issue of fine-tuning of the initial field configuration that can lead to hybrid inflation in the context of global supersymmetry. This problem is generated by the difference between the energy scale at which the Universe emerges from the Planck era and the inflationary scale implied b...

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Detalles Bibliográficos
Autores principales: Panagiotakopoulos, C., Tetradis, N.
Lenguaje:eng
Publicado: 1997
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.59.083502
http://cds.cern.ch/record/337340
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author Panagiotakopoulos, C.
Tetradis, N.
author_facet Panagiotakopoulos, C.
Tetradis, N.
author_sort Panagiotakopoulos, C.
collection CERN
description We address the issue of fine-tuning of the initial field configuration that can lead to hybrid inflation in the context of global supersymmetry. This problem is generated by the difference between the energy scale at which the Universe emerges from the Planck era and the inflationary scale implied by the COBE observations: V^{1/4} \sim 10^{-3} m_{Pl}. We propose a scenario with two stages of inflation. The first stage, with a typical scale not far from m_{Pl}, occurs ``naturally'' and provides the necessary homogeneity for the second stage. The latter generates the density perturbations that result in the cosmic microwave background anisotropy observed by COBE.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1997
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spelling cern-3373402023-03-14T19:56:52Zdoi:10.1103/PhysRevD.59.083502http://cds.cern.ch/record/337340engPanagiotakopoulos, C.Tetradis, N.Two-Stage Inflation as a Solution to the Initial Condition Problem of Hybrid InflationParticle Physics - PhenomenologyWe address the issue of fine-tuning of the initial field configuration that can lead to hybrid inflation in the context of global supersymmetry. This problem is generated by the difference between the energy scale at which the Universe emerges from the Planck era and the inflationary scale implied by the COBE observations: V^{1/4} \sim 10^{-3} m_{Pl}. We propose a scenario with two stages of inflation. The first stage, with a typical scale not far from m_{Pl}, occurs ``naturally'' and provides the necessary homogeneity for the second stage. The latter generates the density perturbations that result in the cosmic microwave background anisotropy observed by COBE.We address the issue of fine-tuning of the initial field configuration that can lead to hybrid inflation in the context of global supersymmetry. This problem is generated by the difference between the energy scale at which the Universe emerges from the Planck era and the inflationary scale implied by the COBE observations: V^{1/4} \sim 10^{-3} m_{Pl}. We propose a scenario with two stages of inflation. The first stage, with a typical scale not far from m_{Pl}, occurs ``naturally'' and provides the necessary homogeneity for the second stage. The latter generates the density perturbations that result in the cosmic microwave background anisotropy observed by COBE.hep-ph/9710526CERN-TH-97-301CERN-TH-97-301oai:cds.cern.ch:3373401997-10-30
spellingShingle Particle Physics - Phenomenology
Panagiotakopoulos, C.
Tetradis, N.
Two-Stage Inflation as a Solution to the Initial Condition Problem of Hybrid Inflation
title Two-Stage Inflation as a Solution to the Initial Condition Problem of Hybrid Inflation
title_full Two-Stage Inflation as a Solution to the Initial Condition Problem of Hybrid Inflation
title_fullStr Two-Stage Inflation as a Solution to the Initial Condition Problem of Hybrid Inflation
title_full_unstemmed Two-Stage Inflation as a Solution to the Initial Condition Problem of Hybrid Inflation
title_short Two-Stage Inflation as a Solution to the Initial Condition Problem of Hybrid Inflation
title_sort two-stage inflation as a solution to the initial condition problem of hybrid inflation
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevD.59.083502
http://cds.cern.ch/record/337340
work_keys_str_mv AT panagiotakopoulosc twostageinflationasasolutiontotheinitialconditionproblemofhybridinflation
AT tetradisn twostageinflationasasolutiontotheinitialconditionproblemofhybridinflation

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