Producing a Scale-Invariant Spectrum of Perturbations in a Hagedorn Phase of String Cosmology
Brandenberger, Robert H.
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CitationNayeri, Ali, Robert H. Brandenberger, and Cumrun Vafa. 2006. “Producing a Scale-Invariant Spectrum of Perturbations in a Hagedorn Phase of String Cosmology.” Physical Review Letters 97 (2). https://doi.org/10.1103/physrevlett.97.021302.
AbstractWe study the generation of cosmological perturbations during the Hagedorn phase of string gas cosmology. Using tools of string thermodynamics we provide indications that it may be possible to obtain a nearly scale-invariant spectrum of cosmological fluctuations on scales which are of cosmological interest today. In our cosmological scenario, the early Hagedorn phase of string gas cosmology goes over smoothly into the radiation-dominated phase of standard cosmology, without having a period of cosmological inflation.
Citable link to this pagehttp://nrs.harvard.edu/urn-3:HUL.InstRepos:41384999
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