Can we have inflation with Omega > 1?

• Main Author: Linde, Andrei
• Format: Text
• Language: unknown
• Published: arXiv 2003
• Subjects: Astrophysics astro-ph; General Relativity and Quantum Cosmology gr-qc; High Energy Physics - Phenomenology hep-ph; High Energy Physics - Theory hep-th; FOS Physical sciences; Rovaniemi
• Online Access: https://dx.doi.org/10.48550/arxiv.astro-ph/0303245; https://arxiv.org/abs/astro-ph/0303245

It is very difficult to obtain a realistic model of a closed inflationary universe. Even if one fine-tunes the total number of e-folds to be sufficiently small, the resulting universe typically has large density perturbations on the scale of the horizon. We describe a class of models where this prob...