1996/11/25 by M. Gasperini, Gasperini, M.
Physics and Astronomy · #Astrophysics (astro-ph) #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #Particle physics theoretical and experimental studies #astro-ph #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.48550/arxiv.gr-qc/9611059
13 pages, LATEX, two figures included using epsf. To appear in Proc. of the 12th It. Conf. on Gen. Rel. and Grav. Phys. (Rome, Sept. 1996), ed. by M. Bassan et al. (World Scientific, Singapore). An updated collection of papers on the pre-big-bang scenario in string cosmology is available at http://www.to.infn.it/teorici/gasperini/
arxiv created 1996/11/25 · openalex publication_date 1996/11/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The allowed mass windows for a cosmic background of relic dilatons are estimated in the context of the pre-big bang scenario. The dilatons are produced from the quantum fluctuations of the vacuum, and the extension of the windows is controlled by the string mass scale. The possible relaxation of phenomenological bounds due to an intermediate stage of reheating is discussed. Even without such a relaxation, the allowed range of masses includes a light sector in which the dilatons are not yet decayed, and could provide the dominant contribution to the present large scale density.