2002/06/03 by Alejandro Gangui, Jérôme Martin, Gangui, Alejandro +4
Earth and Planetary Sciences · Physics and Astronomy · #Astrophysics (astro-ph) #Cosmology and Gravitation Theories #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #Geophysics and Gravity Measurements #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #Relativity and Gravitational Theory #astro-ph #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.48550/arxiv.astro-ph/0206023
To appear in the Proceedings of the XXXVIIth Rencontres de Moriond on ``The Cosmological Model'', Les Arcs, France, March 16-23, 2002
arxiv created 2002/06/03 · openalex publication_date 2002/06/03 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In the framework of Inflationary theory, the assumption that the quantum\nstate of the perturbations is a non-vacuum state leads to a difficulty:\nnon-vacuum initial states imply, in general, a large energy density of inflaton\nfield quanta, not of a cosmological term type, that could prevent the\ninflationary phase. In this short note, we discuss in detail why this is so,\nkeeping an eye on possible non-Gaussian features due to considering generic\nnon-vacuum initial states.\n