2007/01/11 by Robert Brandenberger, Robert H. Brandenberger · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Relativity and Gravitational Theory #astro-ph #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1007/978-3-540-74353-8_11
published as Lect.NotesPhys.738:393-424,2008 · 33 pages, 4 figures Based on an invited talk at "Inflation + 25", Paris, June 2006 To be published in the proceedings (Springer, 2007)
arxiv created 2007/01/11 · openalex publication_date 2007/10/11 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04
In spite of its great phenomenological success, current models of scalar field-driven inflation suffer from important unresolved conceptual issues. New fundamental physics will be required to address these questions. String theory is a candidate for a unified quantum theory of all four forces of nature. As will be shown, string theory may lead to a cosmological background quite different from an inflationary cosmology, and may admit a new stringy mechanism for the origin of a roughly scale-invariant spectrum of cosmological fluctuations.