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

Access Restriction
Open

 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