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VOLUME 82 | ISSUE 4 | PAGE 187 Inflaton field potential producing the exactly flat spectrum of adiabatic perturbations A. A. Starobinsky Landau Institute for Theoretical Physics RAS, 119334 Moscow, Russia PACS: 98.80.-k Abstract Presented is the exact solution of the problem of finding a potential of an inflaton scalar field for which adiabatic perturbations generated during a de Sitter (inflationary) stage in the early Universe have the exactly flat (or, the Harrison-Zeldovich) initial spectrum. This solution lies outside the scope of the slow-roll approximation and higher-order corrections to it. The potential found depends on two arbitrary physical constants, one of those determines an amplitude of perturbations. For small (zero) values of the other constant, a long (infinite) inflationary stage with slow rolling of the inflaton field exists. Download PS file (GZipped, 70.2K)  |  Download PDF file (158.1K) Список работ, цитирующих данную статью, см. здесь. List of articles citing this article can be found here.