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Author Panagiotakopoulos, C. ♦ Tetradis, N.
Source arXiv.org
Content type Text
File Format PDF
Date of Submission 1997-10-29
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Astronomy & allied sciences ♦ Physics
Subject Keyword High Energy Physics - Phenomenology ♦ Astrophysics ♦ physics:astro-ph ♦ physics:hep-ph
Abstract 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.
Description Reference: Phys.Rev.D59:083502,1999
Educational Use Research
Learning Resource Type Article
Page Count 12


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