Density Perturbations in String Cosmology

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dc.creatorMaggiore, Michele
dc.creatorSturani, Riccardo
dc.date1997-05-29
dc.date.accessioned2026-07-07T03:31:38Z
dc.date.available2026-07-07T03:31:38Z
dc.descriptionWe discuss the generation and evolution of density perturbations during the large curvature phase of string cosmology. We find that perturbations in the scalar components of the metric evolve with cosmic time as $\exp (γH_st)$ where $H_s$ is the Hubble constant during the string phase and $γ$ is a constant which is determined by an algebraic equation involving all orders in the string coupling $α'$. The seed for the perturbations can be provided by massive string modes.
dc.description8 pages, Latex, no figures
dc.identifierhttps://arxiv.org/abs/gr-qc/9705082
dc.identifierhttp://arxiv.org/abs/gr-qc/9705082
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/35932
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.titleDensity Perturbations in String Cosmology
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